40286172 has 12 divisors (see below), whose sum is σ = 94001096. Its totient is φ = 13428720.

The previous prime is 40286171. The next prime is 40286177. The reversal of 40286172 is 27168204.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40286171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1678579 + ... + 1678602.

Almost surely, 2^40286172 is an apocalyptic number.

It is an amenable number.

40286172 is an abundant number, since it is smaller than the sum of its proper divisors (53714924).

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

40286172 is a wasteful number, since it uses less digits than its factorization.

40286172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357188 (or 3357186 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 40286172 is about 6347.1388829929. The cubic root of 40286172 is about 342.8088307919.

The spelling of 40286172 in words is "forty million, two hundred eighty-six thousand, one hundred seventy-two".