90192004 has 24 divisors (see below), whose sum is σ = 190995840. Its totient is φ = 36379776.

The previous prime is 90191999. The next prime is 90192007. The reversal of 90192004 is 40029109.

It is a self number, because there is not a number n which added to its sum of digits gives 90192004.

It is not an unprimeable number, because it can be changed into a prime (90192007) 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, 94264 + ... + 95215.

It is an arithmetic number, because the mean of its divisors is an integer number (7958160).

Almost surely, 2^90192004 is an apocalyptic number.

It is an amenable number.

90192004 is an abundant number, since it is smaller than the sum of its proper divisors (100803836).

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

90192004 is a wasteful number, since it uses less digits than its factorization.

90192004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189507 (or 189505 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 90192004 is about 9496.9470884069. The cubic root of 90192004 is about 448.4589326092.

The spelling of 90192004 in words is "ninety million, one hundred ninety-two thousand, four".