8642490 has 32 divisors (see below), whose sum is σ = 21413376. Its totient is φ = 2230080.

The previous prime is 8642489. The next prime is 8642507. The reversal of 8642490 is 942468.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3717 + ... + 5576.

It is an arithmetic number, because the mean of its divisors is an integer number (669168).

Almost surely, 2^8642490 is an apocalyptic number.

8642490 is an abundant number, since it is smaller than the sum of its proper divisors (12770886).

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

8642490 is a wasteful number, since it uses less digits than its factorization.

8642490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9334.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 8642490 is about 2939.8112184288. The cubic root of 8642490 is about 205.2168239306.

The spelling of 8642490 in words is "eight million, six hundred forty-two thousand, four hundred ninety".