40572387 has 32 divisors (see below), whose sum is σ = 65390400. Its totient is φ = 24758784.

The previous prime is 40572383. The next prime is 40572409. The reversal of 40572387 is 78327504.

40572387 is a `hidden beast` number, since 4 + 0 + 572 + 3 + 87 = 666.

It is not a de Polignac number, because 40572387 - 2² = 40572383 is a prime.

It is a super-2 number, since 2×40572387² = 3292237173755538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40572383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15789 + ... + 18177.

It is an arithmetic number, because the mean of its divisors is an integer number (2043450).

Almost surely, 2^40572387 is an apocalyptic number.

40572387 is a deficient number, since it is larger than the sum of its proper divisors (24818013).

40572387 is a wasteful number, since it uses less digits than its factorization.

40572387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452 (or 2446 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 40572387 is about 6369.6457515312. The cubic root of 40572387 is about 343.6187495839.

The spelling of 40572387 in words is "forty million, five hundred seventy-two thousand, three hundred eighty-seven".