40030456 has 16 divisors (see below), whose sum is σ = 75632040. Its totient is φ = 19861920.

The previous prime is 40030453. The next prime is 40030481. The reversal of 40030456 is 65403004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40030453) 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, 18051 + ... + 20146.

Almost surely, 2^40030456 is an apocalyptic number.

It is an amenable number.

40030456 is a deficient number, since it is larger than the sum of its proper divisors (35601584).

40030456 is a wasteful number, since it uses less digits than its factorization.

40030456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38334 (or 38330 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40030456 is about 6326.9626204048. The cubic root of 40030456 is about 342.0819656943.

The spelling of 40030456 in words is "forty million, thirty thousand, four hundred fifty-six".