74789281 has 8 divisors (see below), whose sum is σ = 86434560. Its totient is φ = 63384288.

The previous prime is 74789279. The next prime is 74789291. The reversal of 74789281 is 18298747.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74789281 - 2¹ = 74789279 is a prime.

It is a super-2 number, since 2×74789281² = 11186873104993922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74789291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59401 + ... + 60646.

It is an arithmetic number, because the mean of its divisors is an integer number (10804320).

Almost surely, 2^74789281 is an apocalyptic number.

It is an amenable number.

74789281 is a deficient number, since it is larger than the sum of its proper divisors (11645279).

74789281 is a wasteful number, since it uses less digits than its factorization.

74789281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120143.

The product of its digits is 225792, while the sum is 46.

The square root of 74789281 is about 8648.0796134171. The cubic root of 74789281 is about 421.3210126624.

The spelling of 74789281 in words is "seventy-four million, seven hundred eighty-nine thousand, two hundred eighty-one".