40872740 has 12 divisors (see below), whose sum is σ = 85832796. Its totient is φ = 16349088.

The previous prime is 40872719. The next prime is 40872757. The reversal of 40872740 is 4727804.

It can be written as a sum of positive squares in 2 ways, for example, as 25080064 + 15792676 = 5008^2 + 3974^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 40872697 and 40872706.

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, 1021799 + ... + 1021838.

It is an arithmetic number, because the mean of its divisors is an integer number (7152733).

Almost surely, 2^40872740 is an apocalyptic number.

It is an amenable number.

40872740 is an abundant number, since it is smaller than the sum of its proper divisors (44960056).

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

40872740 is a wasteful number, since it uses less digits than its factorization.

40872740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043646 (or 2043644 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 40872740 is about 6393.1791778426. The cubic root of 40872740 is about 344.4645899498.

The spelling of 40872740 in words is "forty million, eight hundred seventy-two thousand, seven hundred forty".