7572809090 has 32 divisors (see below), whose sum is σ = 16994565504. Its totient is φ = 2360355840.

The previous prime is 7572809089. The next prime is 7572809141. The reversal of 7572809090 is 909082757.

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, 4916639 + ... + 4918178.

It is an arithmetic number, because the mean of its divisors is an integer number (531080172).

Almost surely, 2^7572809090 is an apocalyptic number.

7572809090 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7572809090 is an abundant number, since it is smaller than the sum of its proper divisors (9421756414).

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

7572809090 is a wasteful number, since it uses less digits than its factorization.

7572809090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9834842.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 7572809090 is about 87021.8885683366. Note that the first 3 decimals coincide. The cubic root of 7572809090 is about 1963.7476099571.

The spelling of 7572809090 in words is "seven billion, five hundred seventy-two million, eight hundred nine thousand, ninety".