40712172 has 24 divisors (see below), whose sum is σ = 98271600. Its totient is φ = 13102656.

The previous prime is 40712171. The next prime is 40712179. The reversal of 40712172 is 27121704.

It is not an unprimeable number, because it can be changed into a prime (40712171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58147 + ... + 58842.

It is an arithmetic number, because the mean of its divisors is an integer number (4094650).

Almost surely, 2^40712172 is an apocalyptic number.

It is an amenable number.

40712172 is an abundant number, since it is smaller than the sum of its proper divisors (57559428).

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

40712172 is a wasteful number, since it uses less digits than its factorization.

40712172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117025 (or 117023 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 40712172 is about 6380.6090618373. The cubic root of 40712172 is about 344.0129231669.

Adding to 40712172 its reverse (27121704), we get a palindrome (67833876).

The spelling of 40712172 in words is "forty million, seven hundred twelve thousand, one hundred seventy-two".