40516820 has 24 divisors (see below), whose sum is σ = 86897664. Its totient is φ = 15861536.

The previous prime is 40516787. The next prime is 40516841. The reversal of 40516820 is 2861504.

40516820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40516820² = 3283225405824800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40516820.

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 7 ways as a sum of consecutive naturals, for example, 20612 + ... + 22491.

It is an arithmetic number, because the mean of its divisors is an integer number (3620736).

Almost surely, 2^40516820 is an apocalyptic number.

It is an amenable number.

40516820 is an abundant number, since it is smaller than the sum of its proper divisors (46380844).

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

40516820 is a wasteful number, since it uses less digits than its factorization.

40516820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43159 (or 43157 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 40516820 is about 6365.2823975060. The cubic root of 40516820 is about 343.4618071579.

It can be divided in two parts, 405 and 16820, that multiplied together give a square (6812100 = 2610²).

The spelling of 40516820 in words is "forty million, five hundred sixteen thousand, eight hundred twenty".