7472521806 has 16 divisors (see below), whose sum is σ = 15155538048. Its totient is φ = 2455758200.

The previous prime is 7472521769. The next prime is 7472521829. The reversal of 7472521806 is 6081252747.

It is a super-2 number, since 2×7472521806² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8770140 + ... + 8770991.

It is an arithmetic number, because the mean of its divisors is an integer number (947221128).

Almost surely, 2^7472521806 is an apocalyptic number.

7472521806 is an abundant number, since it is smaller than the sum of its proper divisors (7683016242).

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

7472521806 is a wasteful number, since it uses less digits than its factorization.

7472521806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17541207.

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 7472521806 is about 86443.7493749548. The cubic root of 7472521806 is about 1955.0403731390.

The spelling of 7472521806 in words is "seven billion, four hundred seventy-two million, five hundred twenty-one thousand, eight hundred six".