40666920 has 64 divisors (see below), whose sum is σ = 139432320. Its totient is φ = 9295104.

The previous prime is 40666889. The next prime is 40666933. The reversal of 40666920 is 2966604.

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 15 ways as a sum of consecutive naturals, for example, 23367 + ... + 25046.

It is an arithmetic number, because the mean of its divisors is an integer number (2178630).

Almost surely, 2^40666920 is an apocalyptic number.

40666920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40666920 is an abundant number, since it is smaller than the sum of its proper divisors (98765400).

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

40666920 is a wasteful number, since it uses less digits than its factorization.

40666920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48434 (or 48430 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 40666920 is about 6377.0620194569. The cubic root of 40666920 is about 343.8854179408.

The spelling of 40666920 in words is "forty million, six hundred sixty-six thousand, nine hundred twenty".