87728070272 has 32 divisors (see below), whose sum is σ = 174800042820. Its totient is φ = 43856687104.

The previous prime is 87728070247. The next prime is 87728070323. The reversal of 87728070272 is 27207082778.

It can be written as a sum of positive squares in 2 ways, for example, as 76649244736 + 11078825536 = 276856^2 + 105256^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 87728070272.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754328 + ... + 862824.

Almost surely, 2^87728070272 is an apocalyptic number.

It is an amenable number.

87728070272 is a deficient number, since it is larger than the sum of its proper divisors (87071972548).

87728070272 is a wasteful number, since it uses less digits than its factorization.

87728070272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114828 (or 114816 counting only the distinct ones).

The product of its (nonzero) digits is 1229312, while the sum is 50.

The spelling of 87728070272 in words is "eighty-seven billion, seven hundred twenty-eight million, seventy thousand, two hundred seventy-two".