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76400080 = 2451994799
BaseRepresentation
bin1001000110111…
…00010111010000
312022202112012121
410203130113100
5124024300310
611325304024
71615250521
oct443342720
9168675177
1076400080
113a142569
1221705014
1312a9c963
14a20a848
156a920da
hex48dc5d0

76400080 has 40 divisors (see below), whose sum is σ = 178560000. Its totient is φ = 30400128.

The previous prime is 76400069. The next prime is 76400113. The reversal of 76400080 is 8000467.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13521 + ... + 18319.

It is an arithmetic number, because the mean of its divisors is an integer number (4464000).

Almost surely, 276400080 is an apocalyptic number.

It is an amenable number.

76400080 is an abundant number, since it is smaller than the sum of its proper divisors (102159920).

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

76400080 is a wasteful number, since it uses less digits than its factorization.

76400080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5011 (or 5005 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 76400080 is about 8740.7139296513. The cubic root of 76400080 is about 424.3243335435.

The spelling of 76400080 in words is "seventy-six million, four hundred thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 199 398 796 995 1592 1990 3184 3980 4799 7960 9598 15920 19196 23995 38392 47990 76784 95980 191960 383920 955001 1910002 3820004 4775005 7640008 9550010 15280016 19100020 38200040 76400080