40520646 has 12 divisors (see below), whose sum is σ = 87794772. Its totient is φ = 13506876.

The previous prime is 40520633. The next prime is 40520677. The reversal of 40520646 is 64602504.

It is a happy number.

40520646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1125556 + ... + 1125591.

It is an arithmetic number, because the mean of its divisors is an integer number (7316231).

Almost surely, 2^40520646 is an apocalyptic number.

40520646 is an abundant number, since it is smaller than the sum of its proper divisors (47274126).

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

40520646 is a wasteful number, since it uses less digits than its factorization.

40520646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251155 (or 2251152 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 40520646 is about 6365.5829269596. The cubic root of 40520646 is about 343.4726178411.

The spelling of 40520646 in words is "forty million, five hundred twenty thousand, six hundred forty-six".