87472402 has 8 divisors (see below), whose sum is σ = 131294412. Its totient is φ = 43707600.

The previous prime is 87472379. The next prime is 87472417. The reversal of 87472402 is 20427478.

It can be written as a sum of positive squares in 2 ways, for example, as 86881041 + 591361 = 9321^2 + 769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×87472402² = 15302842223299208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10249 + ... + 16732.

Almost surely, 2^87472402 is an apocalyptic number.

87472402 is a deficient number, since it is larger than the sum of its proper divisors (43822010).

87472402 is a wasteful number, since it uses less digits than its factorization.

87472402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28604.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 87472402 is about 9352.6681754460. The cubic root of 87472402 is about 443.9053209639.

The spelling of 87472402 in words is "eighty-seven million, four hundred seventy-two thousand, four hundred two".