72974213 has 8 divisors (see below), whose sum is σ = 78758400. Its totient is φ = 67214448.

The previous prime is 72974203. The next prime is 72974243. The reversal of 72974213 is 31247927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72974213 - 2⁴ = 72974197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72974203) 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, 368 + ... + 12086.

It is an arithmetic number, because the mean of its divisors is an integer number (9844800).

Almost surely, 2^72974213 is an apocalyptic number.

It is an amenable number.

72974213 is a deficient number, since it is larger than the sum of its proper divisors (5784187).

72974213 is a wasteful number, since it uses less digits than its factorization.

72974213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12211.

The product of its digits is 21168, while the sum is 35.

The square root of 72974213 is about 8542.4945419942. The cubic root of 72974213 is about 417.8847026005.

The spelling of 72974213 in words is "seventy-two million, nine hundred seventy-four thousand, two hundred thirteen".