72050164 has 6 divisors (see below), whose sum is σ = 126087794. Its totient is φ = 36025080.

The previous prime is 72050159. The next prime is 72050177. The reversal of 72050164 is 46105027.

It can be written as a sum of positive squares in only one way, i.e., 56130064 + 15920100 = 7492^2 + 3990^2 .

It is a super-2 number, since 2×72050164² = 10382452264853792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9006267 + ... + 9006274.

Almost surely, 2^72050164 is an apocalyptic number.

It is an amenable number.

72050164 is a deficient number, since it is larger than the sum of its proper divisors (54037630).

72050164 is a wasteful number, since it uses less digits than its factorization.

72050164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18012545 (or 18012543 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 72050164 is about 8488.2368015978. The cubic root of 72050164 is about 416.1133582225.

The spelling of 72050164 in words is "seventy-two million, fifty thousand, one hundred sixty-four".