90257604 has 12 divisors (see below), whose sum is σ = 210601104. Its totient is φ = 30085864.

The previous prime is 90257597. The next prime is 90257617. The reversal of 90257604 is 40675209.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3760722 + ... + 3760745.

It is an arithmetic number, because the mean of its divisors is an integer number (17550092).

Almost surely, 2^90257604 is an apocalyptic number.

It is an amenable number.

90257604 is an abundant number, since it is smaller than the sum of its proper divisors (120343500).

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

90257604 is a wasteful number, since it uses less digits than its factorization.

90257604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7521474 (or 7521472 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 90257604 is about 9500.4002020968. The cubic root of 90257604 is about 448.5676332149.

The spelling of 90257604 in words is "ninety million, two hundred fifty-seven thousand, six hundred four".