7221436436 has 12 divisors (see below), whose sum is σ = 12945746100. Its totient is φ = 3522651840.

The previous prime is 7221436367. The next prime is 7221436493. The reversal of 7221436436 is 6346341227.

It can be written as a sum of positive squares in 2 ways, for example, as 3881290000 + 3340146436 = 62300^2 + 57794^2 .

It is a super-3 number, since 3×7221436436³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7221436436.

It is a congruent number.

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, 22016411 + ... + 22016738.

It is an arithmetic number, because the mean of its divisors is an integer number (1078812175).

Almost surely, 2^7221436436 is an apocalyptic number.

It is an amenable number.

7221436436 is a deficient number, since it is larger than the sum of its proper divisors (5724309664).

7221436436 is a wasteful number, since it uses less digits than its factorization.

7221436436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44033194 (or 44033192 counting only the distinct ones).

The product of its digits is 145152, while the sum is 38.

The square root of 7221436436 is about 84979.0352734132. The cubic root of 7221436436 is about 1932.8932271169.

The spelling of 7221436436 in words is "seven billion, two hundred twenty-one million, four hundred thirty-six thousand, four hundred thirty-six".