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78623468 = 22711397643
BaseRepresentation
bin1001010111110…
…11001011101100
312110221111010022
410223323023230
5130111422333
611445101312
71643200640
oct453731354
9173844108
1078623468
1140420a80
12223b7838
131339a981
14a628c20
156d80c98
hex4afb2ec

78623468 has 48 divisors (see below), whose sum is σ = 172241664. Its totient is φ = 30507840.

The previous prime is 78623443. The next prime is 78623549. The reversal of 78623468 is 86432687.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 121955 + ... + 122597.

It is an arithmetic number, because the mean of its divisors is an integer number (3588368).

Almost surely, 278623468 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78623468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86120832).

78623468 is an abundant number, since it is smaller than the sum of its proper divisors (93618196).

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

78623468 is a wasteful number, since it uses less digits than its factorization.

78623468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1060 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 78623468 is about 8866.9875380537. The cubic root of 78623468 is about 428.4012526688.

The spelling of 78623468 in words is "seventy-eight million, six hundred twenty-three thousand, four hundred sixty-eight".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 397 643 794 1286 1588 2572 2779 4367 4501 5558 7073 8734 9002 11116 14146 17468 18004 28292 30569 49511 61138 99022 122276 198044 255271 510542 1021084 1786897 2807981 3573794 5615962 7147588 11231924 19655867 39311734 78623468