87000072 has 16 divisors (see below), whose sum is σ = 217500240. Its totient is φ = 29000016.

The previous prime is 87000047. The next prime is 87000079. The reversal of 87000072 is 27000078.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 3625003 = 87000072 / (8 + 7 + 0 + 0 + 0 + 0 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (87000079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1812478 + ... + 1812525.

It is an arithmetic number, because the mean of its divisors is an integer number (13593765).

Almost surely, 2^87000072 is an apocalyptic number.

It is an amenable number.

87000072 is an abundant number, since it is smaller than the sum of its proper divisors (130500168).

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

87000072 is a wasteful number, since it uses less digits than its factorization.

87000072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3625012 (or 3625008 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 87000072 is about 9327.3829126931. The cubic root of 87000072 is about 443.1048844051.

The spelling of 87000072 in words is "eighty-seven million, seventy-two", and thus it is an aban number and an uban number.