72994 has 4 divisors (see below), whose sum is σ = 109494. Its totient is φ = 36496.

The previous prime is 72977. The next prime is 72997. The reversal of 72994 is 49927.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38025 + 34969 = 195^2 + 187^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (72997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18247 + ... + 18250.

2⁷²⁹⁹⁴ is an apocalyptic number.

72994 is a deficient number, since it is larger than the sum of its proper divisors (36500).

72994 is a wasteful number, since it uses less digits than its factorization.

72994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36499.

The product of its digits is 4536, while the sum is 31.

The square root of 72994 is about 270.1740179958. The cubic root of 72994 is about 41.7922469080.

The spelling of 72994 in words is "seventy-two thousand, nine hundred ninety-four".