72974306 has 8 divisors (see below), whose sum is σ = 109499904. Its totient is φ = 36474340.

The previous prime is 72974303. The next prime is 72974309. The reversal of 72974306 is 60347927.

It is an interprime number because it is at equal distance from previous prime (72974303) and next prime (72974309).

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

It is a self number, because there is not a number n which added to its sum of digits gives 72974306.

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 3 ways as a sum of consecutive naturals, for example, 4271 + ... + 12813.

It is an arithmetic number, because the mean of its divisors is an integer number (13687488).

Almost surely, 2^72974306 is an apocalyptic number.

It is a pronic number, being equal to 8542×8543.

72974306 is a deficient number, since it is larger than the sum of its proper divisors (36525598).

72974306 is a wasteful number, since it uses less digits than its factorization.

72974306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12816.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 72974306 is about 8542.4999853673. The cubic root of 72974306 is about 417.8848801210.

The spelling of 72974306 in words is "seventy-two million, nine hundred seventy-four thousand, three hundred six".