40812880 has 40 divisors (see below), whose sum is σ = 95422464. Its totient is φ = 16233600.

The previous prime is 40812857. The next prime is 40812899. The reversal of 40812880 is 8821804.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent 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, 13945 + ... + 16615.

Almost surely, 2^40812880 is an apocalyptic number.

40812880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40812880 is an abundant number, since it is smaller than the sum of its proper divisors (54609584).

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

40812880 is a wasteful number, since it uses less digits than its factorization.

40812880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875 (or 2869 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 40812880 is about 6388.4959106193. The cubic root of 40812880 is about 344.2963463993.

The spelling of 40812880 in words is "forty million, eight hundred twelve thousand, eight hundred eighty".