72974305 has 8 divisors (see below), whose sum is σ = 88200000. Its totient is φ = 57958896.

The previous prime is 72974303. The next prime is 72974309. The reversal of 72974305 is 50347927.

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 72974305 - 2¹ = 72974303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72974303) 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, 51805 + ... + 53194.

It is an arithmetic number, because the mean of its divisors is an integer number (11025000).

Almost surely, 2^72974305 is an apocalyptic number.

It is an amenable number.

72974305 is a deficient number, since it is larger than the sum of its proper divisors (15225695).

72974305 is a wasteful number, since it uses less digits than its factorization.

72974305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105143.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 72974305 is about 8542.4999268364. The cubic root of 72974305 is about 417.8848782122.

The spelling of 72974305 in words is "seventy-two million, nine hundred seventy-four thousand, three hundred five".