87293472 has 48 divisors (see below), whose sum is σ = 261882432. Its totient is φ = 24940800.

The previous prime is 87293449. The next prime is 87293477. The reversal of 87293472 is 27439278.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (87293477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64279 + ... + 65622.

It is an arithmetic number, because the mean of its divisors is an integer number (5455884).

Almost surely, 2^87293472 is an apocalyptic number.

It is an amenable number.

87293472 is an abundant number, since it is smaller than the sum of its proper divisors (174588960).

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

87293472 is a wasteful number, since it uses less digits than its factorization.

87293472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129921 (or 129913 counting only the distinct ones).

The product of its digits is 169344, while the sum is 42.

The square root of 87293472 is about 9343.0975591610. The cubic root of 87293472 is about 443.6024361031.

The spelling of 87293472 in words is "eighty-seven million, two hundred ninety-three thousand, four hundred seventy-two".