40572490 has 48 divisors (see below), whose sum is σ = 87727104. Its totient is φ = 13456800.

The previous prime is 40572473. The next prime is 40572509. The reversal of 40572490 is 9427504.

It is a super-2 number, since 2×40572490² = 3292253889600200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13855 + ... + 16525.

It is an arithmetic number, because the mean of its divisors is an integer number (1827648).

Almost surely, 2^40572490 is an apocalyptic number.

40572490 is an abundant number, since it is smaller than the sum of its proper divisors (47154614).

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

40572490 is a wasteful number, since it uses less digits than its factorization.

40572490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723 (or 2716 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 40572490 is about 6369.6538367481. The cubic root of 40572490 is about 343.6190403621.

Adding to 40572490 its reverse (9427504), we get a palindrome (49999994).

The spelling of 40572490 in words is "forty million, five hundred seventy-two thousand, four hundred ninety".