72920602 has 4 divisors (see below), whose sum is σ = 109380906. Its totient is φ = 36460300.

The previous prime is 72920597. The next prime is 72920609. The reversal of 72920602 is 20602927.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 66765241 + 6155361 = 8171^2 + 2481^2 .

It is not an unprimeable number, because it can be changed into a prime (72920609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18230149 + ... + 18230152.

Almost surely, 2^72920602 is an apocalyptic number.

72920602 is a deficient number, since it is larger than the sum of its proper divisors (36460304).

72920602 is a wasteful number, since it uses less digits than its factorization.

72920602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36460303.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 72920602 is about 8539.3560647159. The cubic root of 72920602 is about 417.7823435875.

The spelling of 72920602 in words is "seventy-two million, nine hundred twenty thousand, six hundred two".