72758002 has 4 divisors (see below), whose sum is σ = 109137006. Its totient is φ = 36379000.

The previous prime is 72757999. The next prime is 72758009. The reversal of 72758002 is 20085727.

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., 72743841 + 14161 = 8529^2 + 119^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (72758009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18189499 + ... + 18189502.

Almost surely, 2^72758002 is an apocalyptic number.

72758002 is a deficient number, since it is larger than the sum of its proper divisors (36379004).

72758002 is a wasteful number, since it uses less digits than its factorization.

72758002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36379003.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 72758002 is about 8529.8301272651. The cubic root of 72758002 is about 417.4715856695.

The spelling of 72758002 in words is "seventy-two million, seven hundred fifty-eight thousand, two".