73438281 has 24 divisors (see below), whose sum is σ = 124055360. Its totient is φ = 40987296.

The previous prime is 73438271. The next prime is 73438289. The reversal of 73438281 is 18283437.

It is not a de Polignac number, because 73438281 - 2⁷ = 73438153 is a prime.

It is a super-2 number, since 2×73438281² = 10786362232469922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73438289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10846 + ... + 16263.

Almost surely, 2^73438281 is an apocalyptic number.

It is an amenable number.

73438281 is a deficient number, since it is larger than the sum of its proper divisors (50617079).

73438281 is a wasteful number, since it uses less digits than its factorization.

73438281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27165 (or 27162 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 73438281 is about 8569.6138186035. The cubic root of 73438281 is about 418.7686554101.

The spelling of 73438281 in words is "seventy-three million, four hundred thirty-eight thousand, two hundred eighty-one".