90259512 has 64 divisors (see below), whose sum is σ = 261031680. Its totient is φ = 25473792.

The previous prime is 90259493. The next prime is 90259523. The reversal of 90259512 is 21595209.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10708 + ... + 17180.

It is an arithmetic number, because the mean of its divisors is an integer number (4078620).

Almost surely, 2^90259512 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 90259512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130515840).

90259512 is an abundant number, since it is smaller than the sum of its proper divisors (170772168).

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

90259512 is a wasteful number, since it uses less digits than its factorization.

90259512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6572 (or 6568 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 90259512 is about 9500.5006183885. The cubic root of 90259512 is about 448.5707940234.

The spelling of 90259512 in words is "ninety million, two hundred fifty-nine thousand, five hundred twelve".