87290408 has 16 divisors (see below), whose sum is σ = 172284000. Its totient is φ = 41348016.

The previous prime is 87290383. The next prime is 87290419. The reversal of 87290408 is 80409278.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 286988 + ... + 287291.

It is an arithmetic number, because the mean of its divisors is an integer number (10767750).

Almost surely, 2^87290408 is an apocalyptic number.

It is an amenable number.

87290408 is a deficient number, since it is larger than the sum of its proper divisors (84993592).

87290408 is a wasteful number, since it uses less digits than its factorization.

87290408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574304 (or 574300 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 87290408 is about 9342.9335864064. The cubic root of 87290408 is about 443.5972458953.

The spelling of 87290408 in words is "eighty-seven million, two hundred ninety thousand, four hundred eight".