73971982 has 32 divisors (see below), whose sum is σ = 132088320. Its totient is φ = 30397920.

The previous prime is 73971973. The next prime is 73972009. The reversal of 73971982 is 28917937.

It is a happy number.

Its product of digits (190512) is a multiple of the sum of its prime divisors (1296).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67257 + ... + 68347.

It is an arithmetic number, because the mean of its divisors is an integer number (4127760).

Almost surely, 2^73971982 is an apocalyptic number.

73971982 is a deficient number, since it is larger than the sum of its proper divisors (58116338).

73971982 is a wasteful number, since it uses less digits than its factorization.

73971982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296.

The product of its digits is 190512, while the sum is 46.

The square root of 73971982 is about 8600.6965996947. The cubic root of 73971982 is about 419.7806526603.

The spelling of 73971982 in words is "seventy-three million, nine hundred seventy-one thousand, nine hundred eighty-two".