90250092 has 48 divisors (see below), whose sum is σ = 235804800. Its totient is φ = 29849040.

The previous prime is 90250079. The next prime is 90250109. The reversal of 90250092 is 29005209.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 10959 + ... + 17337.

It is an arithmetic number, because the mean of its divisors is an integer number (4912600).

Almost surely, 2^90250092 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 90250092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117902400).

90250092 is an abundant number, since it is smaller than the sum of its proper divisors (145554708).

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

90250092 is a wasteful number, since it uses less digits than its factorization.

90250092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6523 (or 6515 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 90250092 is about 9500.0048421040. The cubic root of 90250092 is about 448.5551883408. Note that the first 3 decimals are identical.

The spelling of 90250092 in words is "ninety million, two hundred fifty thousand, ninety-two".