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76019972 = 2272387857
BaseRepresentation
bin1001000011111…
…11100100000100
312022001012210112
410201333210010
5123430114342
611313212152
71612105400
oct441774404
9168035715
1076019972
1139a02a26
1221561058
1312998942
14a14c100
156a19682
hex487f904

76019972 has 18 divisors (see below), whose sum is σ = 154755342. Its totient is φ = 32579904.

The previous prime is 76019963. The next prime is 76019987. The reversal of 76019972 is 27991067.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 51179716 + 24840256 = 7154^2 + 4984^2 .

It is a super-2 number, since 2×760199722 = 11558072285761568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193733 + ... + 194124.

It is an arithmetic number, because the mean of its divisors is an integer number (8597519).

Almost surely, 276019972 is an apocalyptic number.

It is an amenable number.

76019972 is an abundant number, since it is smaller than the sum of its proper divisors (78735370).

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

76019972 is a wasteful number, since it uses less digits than its factorization.

76019972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387875 (or 387866 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 76019972 is about 8718.9432845959. The cubic root of 76019972 is about 423.6194595041.

The spelling of 76019972 in words is "seventy-six million, nineteen thousand, nine hundred seventy-two".

Divisors: 1 2 4 7 14 28 49 98 196 387857 775714 1551428 2714999 5429998 10859996 19004993 38009986 76019972