40520544 has 24 divisors (see below), whose sum is σ = 106366680. Its totient is φ = 13506816.

The previous prime is 40520507. The next prime is 40520561. The reversal of 40520544 is 44502504.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210949 + ... + 211140.

It is an arithmetic number, because the mean of its divisors is an integer number (4431945).

Almost surely, 2^40520544 is an apocalyptic number.

It is an amenable number.

40520544 is an abundant number, since it is smaller than the sum of its proper divisors (65846136).

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

40520544 is a wasteful number, since it uses less digits than its factorization.

40520544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422102 (or 422094 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 40520544 is about 6365.5749151196. The cubic root of 40520544 is about 343.4723296404.

The spelling of 40520544 in words is "forty million, five hundred twenty thousand, five hundred forty-four".