90093240 has 48 divisors (see below), whose sum is σ = 292804200. Its totient is φ = 24024768.

The previous prime is 90093239. The next prime is 90093247. The reversal of 90093240 is 4239009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90093247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124770 + ... + 125489.

Almost surely, 2^90093240 is an apocalyptic number.

90093240 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90093240 is an abundant number, since it is smaller than the sum of its proper divisors (202710960).

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

90093240 is a wasteful number, since it uses less digits than its factorization.

90093240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250276 (or 250269 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 90093240 is about 9491.7458878754. The cubic root of 90093240 is about 448.2951790873.

The spelling of 90093240 in words is "ninety million, ninety-three thousand, two hundred forty".