40512490 has 16 divisors (see below), whose sum is σ = 73009152. Its totient is φ = 16185744.

The previous prime is 40512487. The next prime is 40512491. The reversal of 40512490 is 9421504.

It is not an unprimeable number, because it can be changed into a prime (40512491) 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, 9007 + ... + 12733.

It is an arithmetic number, because the mean of its divisors is an integer number (4563072).

Almost surely, 2^40512490 is an apocalyptic number.

40512490 is a deficient number, since it is larger than the sum of its proper divisors (32496662).

40512490 is a wasteful number, since it uses less digits than its factorization.

40512490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4821.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 40512490 is about 6364.9422621105. The cubic root of 40512490 is about 343.4495715595.

Adding to 40512490 its reverse (9421504), we get a palindrome (49933994).

The spelling of 40512490 in words is "forty million, five hundred twelve thousand, four hundred ninety".