40522690 has 16 divisors (see below), whose sum is σ = 78551928. Its totient is φ = 14962176.

The previous prime is 40522681. The next prime is 40522697. The reversal of 40522690 is 9622504.

It can be written as a sum of positive squares in 4 ways, for example, as 17280649 + 23242041 = 4157^2 + 4821^2 .

It is a super-2 number, since 2×40522690² = 3284176809672200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40522697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155727 + ... + 155986.

Almost surely, 2^40522690 is an apocalyptic number.

40522690 is a deficient number, since it is larger than the sum of its proper divisors (38029238).

40522690 is a wasteful number, since it uses less digits than its factorization.

40522690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311733.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 40522690 is about 6365.7434758243. The cubic root of 40522690 is about 343.4783930552.

The spelling of 40522690 in words is "forty million, five hundred twenty-two thousand, six hundred ninety".