90040524 has 24 divisors (see below), whose sum is σ = 240108288. Its totient is φ = 25725840.

The previous prime is 90040519. The next prime is 90040529. The reversal of 90040524 is 42504009.

It is an interprime number because it is at equal distance from previous prime (90040519) and next prime (90040529).

It is a junction number, because it is equal to n+sod(n) for n = 90040494 and 90040503.

It is not an unprimeable number, because it can be changed into a prime (90040529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535872 + ... + 536039.

It is an arithmetic number, because the mean of its divisors is an integer number (10004512).

Almost surely, 2^90040524 is an apocalyptic number.

It is an amenable number.

90040524 is an abundant number, since it is smaller than the sum of its proper divisors (150067764).

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

90040524 is a wasteful number, since it uses less digits than its factorization.

90040524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071925 (or 1071923 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 90040524 is about 9488.9685424708. The cubic root of 90040524 is about 448.2077254690.

The spelling of 90040524 in words is "ninety million, forty thousand, five hundred twenty-four".