72392002 has 4 divisors (see below), whose sum is σ = 108588006. Its totient is φ = 36196000.

The previous prime is 72391987. The next prime is 72392009. The reversal of 72392002 is 20029327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20029327 = 641 ⋅31247.

It can be written as a sum of positive squares in only one way, i.e., 61952641 + 10439361 = 7871^2 + 3231^2 .

It is not an unprimeable number, because it can be changed into a prime (72392009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18097999 + ... + 18098002.

Almost surely, 2^72392002 is an apocalyptic number.

72392002 is a deficient number, since it is larger than the sum of its proper divisors (36196004).

72392002 is a wasteful number, since it uses less digits than its factorization.

72392002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36196003.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 72392002 is about 8508.3489585230. The cubic root of 72392002 is about 416.7703957923.

The spelling of 72392002 in words is "seventy-two million, three hundred ninety-two thousand, two".