7228187492 has 12 divisors (see below), whose sum is σ = 12650293740. Its totient is φ = 3613817856.

The previous prime is 7228187489. The next prime is 7228187521. The reversal of 7228187492 is 2947818227.

It can be written as a sum of positive squares in 2 ways, for example, as 4775362816 + 2452824676 = 69104^2 + 49526^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7228187492.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3017 + ... + 120272.

It is an arithmetic number, because the mean of its divisors is an integer number (1054191145).

Almost surely, 2^7228187492 is an apocalyptic number.

It is an amenable number.

7228187492 is a deficient number, since it is larger than the sum of its proper divisors (5422106248).

7228187492 is a wasteful number, since it uses less digits than its factorization.

7228187492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137950 (or 137948 counting only the distinct ones).

The product of its digits is 903168, while the sum is 50.

The square root of 7228187492 is about 85018.7478853929. The cubic root of 7228187492 is about 1933.4953698382.

The spelling of 7228187492 in words is "seven billion, two hundred twenty-eight million, one hundred eighty-seven thousand, four hundred ninety-two".