72201650 has 24 divisors (see below), whose sum is σ = 134606340. Its totient is φ = 28813760.

The previous prime is 72201643. The next prime is 72201667. The reversal of 72201650 is 5610227.

It can be written as a sum of positive squares in 6 ways, for example, as 17397241 + 54804409 = 4171^2 + 7403^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24032 + ... + 26868.

Almost surely, 2^72201650 is an apocalyptic number.

72201650 is a deficient number, since it is larger than the sum of its proper divisors (62404690).

72201650 is a wasteful number, since it uses less digits than its factorization.

72201650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358 (or 3353 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 72201650 is about 8497.1554063698. The cubic root of 72201650 is about 416.4047812107.

Adding to 72201650 its reverse (5610227), we get a palindrome (77811877).

The spelling of 72201650 in words is "seventy-two million, two hundred one thousand, six hundred fifty".