72394970 has 8 divisors (see below), whose sum is σ = 130310964. Its totient is φ = 28957984.

The previous prime is 72394969. The next prime is 72395009. The reversal of 72394970 is 7949327.

It can be written as a sum of positive squares in 2 ways, for example, as 72369049 + 25921 = 8507^2 + 161^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3619739 + ... + 3619758.

Almost surely, 2^72394970 is an apocalyptic number.

72394970 is a deficient number, since it is larger than the sum of its proper divisors (57915994).

72394970 is a wasteful number, since it uses less digits than its factorization.

72394970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7239504.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 72394970 is about 8508.5233736530. The cubic root of 72394970 is about 416.7760914382.

The spelling of 72394970 in words is "seventy-two million, three hundred ninety-four thousand, nine hundred seventy".