72345002 has 4 divisors (see below), whose sum is σ = 108517506. Its totient is φ = 36172500.

The previous prime is 72344999. The next prime is 72345011. The reversal of 72345002 is 20054327.

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., 71554681 + 790321 = 8459^2 + 889^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18086249 + ... + 18086252.

Almost surely, 2^72345002 is an apocalyptic number.

72345002 is a deficient number, since it is larger than the sum of its proper divisors (36172504).

72345002 is a wasteful number, since it uses less digits than its factorization.

72345002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36172503.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 72345002 is about 8505.5865171074. The cubic root of 72345002 is about 416.6801811794.

Adding to 72345002 its reverse (20054327), we get a palindrome (92399329).

The spelling of 72345002 in words is "seventy-two million, three hundred forty-five thousand, two".