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78937248 = 25313193329
BaseRepresentation
bin1001011010001…
…11110010100000
312111112102112210
410231013302200
5130201442443
611455522120
71645645515
oct455076240
9174472483
1078937248
11406157a5
1222529340
131347a740
14a6ab30c
156de3c33
hex4b47ca0

78937248 has 96 divisors (see below), whose sum is σ = 234964800. Its totient is φ = 23003136.

The previous prime is 78937237. The next prime is 78937277. The reversal of 78937248 is 84273987.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 78937197 and 78937206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22048 + ... + 25376.

It is an arithmetic number, because the mean of its divisors is an integer number (2447550).

Almost surely, 278937248 is an apocalyptic number.

78937248 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78937248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117482400).

78937248 is an abundant number, since it is smaller than the sum of its proper divisors (156027552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78937248 is a wasteful number, since it uses less digits than its factorization.

78937248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374 (or 3366 counting only the distinct ones).

The product of its digits is 677376, while the sum is 48.

The square root of 78937248 is about 8884.6636402286. The cubic root of 78937248 is about 428.9704012919.

The spelling of 78937248 in words is "seventy-eight million, nine hundred thirty-seven thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 12 13 16 19 24 26 32 38 39 48 52 57 76 78 96 104 114 152 156 208 228 247 304 312 416 456 494 608 624 741 912 988 1248 1482 1824 1976 2964 3329 3952 5928 6658 7904 9987 11856 13316 19974 23712 26632 39948 43277 53264 63251 79896 86554 106528 126502 129831 159792 173108 189753 253004 259662 319584 346216 379506 506008 519324 692432 759012 822263 1012016 1038648 1384864 1518024 1644526 2024032 2077296 2466789 3036048 3289052 4154592 4933578 6072096 6578104 9867156 13156208 19734312 26312416 39468624 78937248