90000531504 has 240 divisors, whose sum is σ = 290006563392. Its totient is φ = 25809518592.

The previous prime is 90000531479. The next prime is 90000531527. The reversal of 90000531504 is 40513500009.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3264144 + ... + 3291600.

Almost surely, 2^90000531504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90000531504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145003281696).

90000531504 is an abundant number, since it is smaller than the sum of its proper divisors (200006031888).

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

90000531504 is a wasteful number, since it uses less digits than its factorization.

90000531504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27604 (or 27595 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The spelling of 90000531504 in words is "ninety billion, five hundred thirty-one thousand, five hundred four".