40811872 has 24 divisors (see below), whose sum is σ = 82942272. Its totient is φ = 19747200.

The previous prime is 40811863. The next prime is 40811887. The reversal of 40811872 is 27811804.

It is a super-2 number, since 2×40811872² = 3331217792288768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19579 + ... + 21562.

It is an arithmetic number, because the mean of its divisors is an integer number (3455928).

Almost surely, 2^40811872 is an apocalyptic number.

It is an amenable number.

40811872 is an abundant number, since it is smaller than the sum of its proper divisors (42130400).

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

40811872 is a wasteful number, since it uses less digits than its factorization.

40811872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41182 (or 41174 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 40811872 is about 6388.4170183231. The cubic root of 40811872 is about 344.2935118891.

The spelling of 40811872 in words is "forty million, eight hundred eleven thousand, eight hundred seventy-two".