40312992 has 24 divisors (see below), whose sum is σ = 105821856. Its totient is φ = 13437632.

The previous prime is 40312969. The next prime is 40313011. The reversal of 40312992 is 29921304.

It is a tau number, because it is divible by the number of its divisors (24).

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, 209868 + ... + 210059.

It is an arithmetic number, because the mean of its divisors is an integer number (4409244).

Almost surely, 2^40312992 is an apocalyptic number.

It is an amenable number.

40312992 is an abundant number, since it is smaller than the sum of its proper divisors (65508864).

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

40312992 is a wasteful number, since it uses less digits than its factorization.

40312992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419940 (or 419932 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 40312992 is about 6349.2512944441. The cubic root of 40312992 is about 342.8848874373.

The spelling of 40312992 in words is "forty million, three hundred twelve thousand, nine hundred ninety-two".