90262500 has 144 divisors (see below), whose sum is σ = 275607360. Its totient is φ = 22960000.

The previous prime is 90262481. The next prime is 90262553. The reversal of 90262500 is 526209.

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 47 ways as a sum of consecutive naturals, for example, 1087459 + ... + 1087541.

It is an arithmetic number, because the mean of its divisors is an integer number (1913940).

Almost surely, 2^90262500 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 90262500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137803680).

90262500 is an abundant number, since it is smaller than the sum of its proper divisors (185344860).

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

90262500 is a wasteful number, since it uses less digits than its factorization.

90262500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 90262500 is about 9500.6578719581. The cubic root of 90262500 is about 448.5757438793.

Adding to 90262500 its reverse (526209), we get a palindrome (90788709).

The spelling of 90262500 in words is "ninety million, two hundred sixty-two thousand, five hundred".