72974347 has 8 divisors (see below), whose sum is σ = 74156544. Its totient is φ = 71799528.

The previous prime is 72974339. The next prime is 72974357. The reversal of 72974347 is 74347927.

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 72974347 - 2³ = 72974339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72974357) 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, 20158 + ... + 23500.

It is an arithmetic number, because the mean of its divisors is an integer number (9269568).

Almost surely, 2^72974347 is an apocalyptic number.

72974347 is a deficient number, since it is larger than the sum of its proper divisors (1182197).

72974347 is a wasteful number, since it uses less digits than its factorization.

72974347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689.

The product of its digits is 296352, while the sum is 43.

The square root of 72974347 is about 8542.5023851328. The cubic root of 72974347 is about 417.8849583827.

It can be divided in two parts, 729 and 74347, that added together give a square (75076 = 274²).

The spelling of 72974347 in words is "seventy-two million, nine hundred seventy-four thousand, three hundred forty-seven".