72986386 has 8 divisors (see below), whose sum is σ = 119432304. Its totient is φ = 33175620.

The previous prime is 72986371. The next prime is 72986387. The reversal of 72986386 is 68368927.

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

It is not an unprimeable number, because it can be changed into a prime (72986387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1658760 + ... + 1658803.

It is an arithmetic number, because the mean of its divisors is an integer number (14929038).

Almost surely, 2^72986386 is an apocalyptic number.

72986386 is a deficient number, since it is larger than the sum of its proper divisors (46445918).

72986386 is a wasteful number, since it uses less digits than its factorization.

72986386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317576.

The product of its digits is 870912, while the sum is 49.

The square root of 72986386 is about 8543.2070090804. The cubic root of 72986386 is about 417.9079374184.

The spelling of 72986386 in words is "seventy-two million, nine hundred eighty-six thousand, three hundred eighty-six".