90140244 has 48 divisors (see below), whose sum is σ = 213962112. Its totient is φ = 29532672.

The previous prime is 90140231. The next prime is 90140261. The reversal of 90140244 is 44204109.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

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, 287832 + ... + 288144.

It is an arithmetic number, because the mean of its divisors is an integer number (4457544).

Almost surely, 2^90140244 is an apocalyptic number.

It is an amenable number.

90140244 is an abundant number, since it is smaller than the sum of its proper divisors (123821868).

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

90140244 is a wasteful number, since it uses less digits than its factorization.

90140244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 90140244 is about 9494.2216110643. The cubic root of 90140244 is about 448.3731279734.

The spelling of 90140244 in words is "ninety million, one hundred forty thousand, two hundred forty-four".