40631620 has 24 divisors (see below), whose sum is σ = 85579200. Its totient is φ = 16204512.

The previous prime is 40631609. The next prime is 40631623. The reversal of 40631620 is 2613604.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 40631591 and 40631600.

It is not an unprimeable number, because it can be changed into a prime (40631623) 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, 4351 + ... + 10009.

It is an arithmetic number, because the mean of its divisors is an integer number (3565800).

Almost surely, 2^40631620 is an apocalyptic number.

It is an amenable number.

40631620 is an abundant number, since it is smaller than the sum of its proper divisors (44947580).

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

40631620 is a wasteful number, since it uses less digits than its factorization.

40631620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6027 (or 6025 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 40631620 is about 6374.2936863624. The cubic root of 40631620 is about 343.7858884844.

The spelling of 40631620 in words is "forty million, six hundred thirty-one thousand, six hundred twenty".