40840524 has 36 divisors (see below), whose sum is σ = 107061864. Its totient is φ = 13613184.

The previous prime is 40840523. The next prime is 40840529. The reversal of 40840524 is 42504804.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (40840523) 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, 20037 + ... + 21980.

Almost surely, 2^40840524 is an apocalyptic number.

It is an amenable number.

40840524 is an abundant number, since it is smaller than the sum of its proper divisors (66221340).

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

40840524 is a wasteful number, since it uses less digits than its factorization.

40840524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42036 (or 42022 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 40840524 is about 6390.6591209358. The cubic root of 40840524 is about 344.3740635326.

The spelling of 40840524 in words is "forty million, eight hundred forty thousand, five hundred twenty-four".