74284 has 18 divisors (see below), whose sum is σ = 151620. Its totient is φ = 31752.

The previous prime is 74279. The next prime is 74287. The reversal of 74284 is 48247.

74284 is nontrivially palindromic in base 13.

It is a super-2 number, since 2×74284² = 11036225312, which contains 22 as substring.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (74287) by changing a digit.

74284 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7 + ... + 385.

2⁷⁴²⁸⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75810).

74284 is an abundant number, since it is smaller than the sum of its proper divisors (77336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74284 is a wasteful number, since it uses less digits than its factorization.

74284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 388 counting only the distinct ones).

The product of its digits is 1792, while the sum is 25.

The square root of 74284 is about 272.5509126750. The cubic root of 74284 is about 42.0370044244.

The spelling of 74284 in words is "seventy-four thousand, two hundred eighty-four".