40813320 has 32 divisors (see below), whose sum is σ = 122440320. Its totient is φ = 10883520.

The previous prime is 40813307. The next prime is 40813361. The reversal of 40813320 is 2331804.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 169936 + ... + 170175.

It is an arithmetic number, because the mean of its divisors is an integer number (3826260).

Almost surely, 2^40813320 is an apocalyptic number.

40813320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40813320 is an abundant number, since it is smaller than the sum of its proper divisors (81627000).

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

40813320 is a wasteful number, since it uses less digits than its factorization.

40813320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340125 (or 340121 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40813320 is about 6388.5303474273. The cubic root of 40813320 is about 344.2975836708.

The spelling of 40813320 in words is "forty million, eight hundred thirteen thousand, three hundred twenty".