40056472 has 8 divisors (see below), whose sum is σ = 75105900. Its totient is φ = 20028232.

The previous prime is 40056463. The next prime is 40056473. The reversal of 40056472 is 27465004.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 40056472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40056473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2503522 + ... + 2503537.

Almost surely, 2^40056472 is an apocalyptic number.

It is an amenable number.

40056472 is a deficient number, since it is larger than the sum of its proper divisors (35049428).

40056472 is a wasteful number, since it uses less digits than its factorization.

40056472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5007065 (or 5007061 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 40056472 is about 6329.0182493022. The cubic root of 40056472 is about 342.1560565910.

The spelling of 40056472 in words is "forty million, fifty-six thousand, four hundred seventy-two".