73145944 has 16 divisors (see below), whose sum is σ = 138151800. Its totient is φ = 36305472.

The previous prime is 73145921. The next prime is 73145971. The reversal of 73145944 is 44954137.

It is a super-2 number, since 2×73145944² = 10700658247302272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32274 + ... + 34465.

Almost surely, 2^73145944 is an apocalyptic number.

It is an amenable number.

73145944 is a deficient number, since it is larger than the sum of its proper divisors (65005856).

73145944 is a wasteful number, since it uses less digits than its factorization.

73145944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66882 (or 66878 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 73145944 is about 8552.5402074471. The cubic root of 73145944 is about 418.2122499822.

The spelling of 73145944 in words is "seventy-three million, one hundred forty-five thousand, nine hundred forty-four".