7264642090 has 12 divisors (see below), whose sum is σ = 13076840934. Its totient is φ = 2905749024.

The previous prime is 7264642043. The next prime is 7264642103. The reversal of 7264642090 is 902464627.

It can be written as a sum of positive squares in 3 ways, for example, as 6741559449 + 523082641 = 82107^2 + 22871^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 256054 + ... + 283006.

Almost surely, 2^7264642090 is an apocalyptic number.

7264642090 is a deficient number, since it is larger than the sum of its proper divisors (5812198844).

7264642090 is an frugal number, since it uses more digits than its factorization.

7264642090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53913 (or 26960 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 7264642090 is about 85232.8697745183. The cubic root of 7264642090 is about 1936.7403803481.

Multiplying 7264642090 by its sum of digits (40), we get a square (290585683600 = 539060²).

The spelling of 7264642090 in words is "seven billion, two hundred sixty-four million, six hundred forty-two thousand, ninety".