72946 has 4 divisors (see below), whose sum is σ = 109422. Its totient is φ = 36472.

The previous prime is 72937. The next prime is 72949. The reversal of 72946 is 64927.

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., 65025 + 7921 = 255^2 + 89^2 .

It is a super-2 number, since 2×72946² = 10642237832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18235 + ... + 18238.

2⁷²⁹⁴⁶ is an apocalyptic number.

72946 is a deficient number, since it is larger than the sum of its proper divisors (36476).

72946 is a wasteful number, since it uses less digits than its factorization.

72946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36475.

The product of its digits is 3024, while the sum is 28.

The square root of 72946 is about 270.0851717514. The cubic root of 72946 is about 41.7830842018.

The spelling of 72946 in words is "seventy-two thousand, nine hundred forty-six".