72972274 has 16 divisors (see below), whose sum is σ = 115390080. Its totient is φ = 34514640.

The previous prime is 72972271. The next prime is 72972299. The reversal of 72972274 is 47227927.

It is not an unprimeable number, because it can be changed into a prime (72972271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41044 + ... + 42784.

It is an arithmetic number, because the mean of its divisors is an integer number (7211880).

Almost surely, 2^72972274 is an apocalyptic number.

72972274 is a deficient number, since it is larger than the sum of its proper divisors (42417806).

72972274 is a wasteful number, since it uses less digits than its factorization.

72972274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865.

The product of its digits is 98784, while the sum is 40.

The square root of 72972274 is about 8542.3810498010. The cubic root of 72972274 is about 417.8810013587.

The spelling of 72972274 in words is "seventy-two million, nine hundred seventy-two thousand, two hundred seventy-four".