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107978280 = 23351137963
BaseRepresentation
bin1100110111110…
…01111000101000
321112011212100120
412123321320220
5210120301110
614414203240
72450541324
oct633717050
9245155316
10107978280
1155a50753
12301b3520
13194a8097
14104aa984
15972d870
hex66f9e28

107978280 has 64 divisors (see below), whose sum is σ = 326842560. Its totient is φ = 28535808.

The previous prime is 107978263. The next prime is 107978287. The reversal of 107978280 is 82879701.

It is not an unprimeable number, because it can be changed into a prime (107978287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9579 + ... + 17541.

It is an arithmetic number, because the mean of its divisors is an integer number (5106915).

Almost surely, 2107978280 is an apocalyptic number.

107978280 is a gapful number since it is divisible by the number (10) 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 107978280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163421280).

107978280 is an abundant number, since it is smaller than the sum of its proper divisors (218864280).

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

107978280 is a wasteful number, since it uses less digits than its factorization.

107978280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8090 (or 8086 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 107978280 is about 10391.2597888803. The cubic root of 107978280 is about 476.1883890512.

The spelling of 107978280 in words is "one hundred seven million, nine hundred seventy-eight thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 113 120 226 339 452 565 678 904 1130 1356 1695 2260 2712 3390 4520 6780 7963 13560 15926 23889 31852 39815 47778 63704 79630 95556 119445 159260 191112 238890 318520 477780 899819 955560 1799638 2699457 3599276 4499095 5398914 7198552 8998190 10797828 13497285 17996380 21595656 26994570 35992760 53989140 107978280