40072572 has 36 divisors (see below), whose sum is σ = 101930920. Its totient is φ = 13273632.

The previous prime is 40072561. The next prime is 40072573. The reversal of 40072572 is 27527004.

40072572 is a `hidden beast` number, since 400 + 7 + 257 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×40072572² = 3211622053390368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40072573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2454 + ... + 9282.

Almost surely, 2^40072572 is an apocalyptic number.

It is an amenable number.

40072572 is an abundant number, since it is smaller than the sum of its proper divisors (61858348).

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

40072572 is a wasteful number, since it uses less digits than its factorization.

40072572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7002 (or 6997 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 40072572 is about 6330.2900407485. The cubic root of 40072572 is about 342.2018916697.

Adding to 40072572 its reverse (27527004), we get a palindrome (67599576).

The spelling of 40072572 in words is "forty million, seventy-two thousand, five hundred seventy-two".