72173962 has 12 divisors (see below), whose sum is σ = 125936370. Its totient is φ = 30931656.

The previous prime is 72173947. The next prime is 72173963. The reversal of 72173962 is 26937127.

It can be written as a sum of positive squares in only one way, i.e., 51279921 + 20894041 = 7161^2 + 4571^2 .

It is not an unprimeable number, because it can be changed into a prime (72173963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 368137 + ... + 368332.

Almost surely, 2^72173962 is an apocalyptic number.

72173962 is a deficient number, since it is larger than the sum of its proper divisors (53762408).

72173962 is a wasteful number, since it uses less digits than its factorization.

72173962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736485 (or 736478 counting only the distinct ones).

The product of its digits is 31752, while the sum is 37.

The square root of 72173962 is about 8495.5259990185. The cubic root of 72173962 is about 416.3515465562.

It can be divided in two parts, 721739 and 62, that added together give a triangular number (721801 = T₁₂₀₁).

The spelling of 72173962 in words is "seventy-two million, one hundred seventy-three thousand, nine hundred sixty-two".