74793281 has 4 divisors (see below), whose sum is σ = 74903472. Its totient is φ = 74683092.

The previous prime is 74793247. The next prime is 74793331. The reversal of 74793281 is 18239747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74793281 - 2¹⁰ = 74792257 is a prime.

It is a super-2 number, since 2×74793281² = 11188069765489922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74793241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54071 + ... + 55436.

It is an arithmetic number, because the mean of its divisors is an integer number (18725868).

Almost surely, 2^74793281 is an apocalyptic number.

It is an amenable number.

74793281 is a deficient number, since it is larger than the sum of its proper divisors (110191).

74793281 is a wasteful number, since it uses less digits than its factorization.

74793281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110190.

The product of its digits is 84672, while the sum is 41.

The square root of 74793281 is about 8648.3108755410. The cubic root of 74793281 is about 421.3285237833.

The spelling of 74793281 in words is "seventy-four million, seven hundred ninety-three thousand, two hundred eighty-one".