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72476980 = 225103151233
BaseRepresentation
bin1000101000111…
…10100100110100
312001101012201121
410110132210310
5122023230410
611105233324
71540021102
oct424364464
9161335647
1072476980
1137a03034
1220332844
13120280b4
1498a8c72
1565699da
hex451e934

72476980 has 48 divisors (see below), whose sum is σ = 155361024. Its totient is φ = 28396800.

The previous prime is 72476959. The next prime is 72476993. The reversal of 72476980 is 8967427.

It is a congruent number.

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, 310944 + ... + 311176.

It is an arithmetic number, because the mean of its divisors is an integer number (3236688).

Almost surely, 272476980 is an apocalyptic number.

It is an amenable number.

72476980 is an abundant number, since it is smaller than the sum of its proper divisors (82884044).

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

72476980 is a wasteful number, since it uses less digits than its factorization.

72476980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 72476980 is about 8513.3412946974. The cubic root of 72476980 is about 416.9334085783.

The spelling of 72476980 in words is "seventy-two million, four hundred seventy-six thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 103 151 206 233 302 412 466 515 604 755 932 1030 1165 1510 2060 2330 3020 4660 15553 23999 31106 35183 47998 62212 70366 77765 95996 119995 140732 155530 175915 239990 311060 351830 479980 703660 3623849 7247698 14495396 18119245 36238490 72476980