74312 has 16 divisors (see below), whose sum is σ = 159360. Its totient is φ = 31824.

The previous prime is 74311. The next prime is 74317. The reversal of 74312 is 21347.

It is a happy number.

It is a plaindrome in base 16.

It is a nialpdrome in base 8.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 74312.

It is not an unprimeable number, because it can be changed into a prime (74311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608 + ... + 719.

It is an arithmetic number, because the mean of its divisors is an integer number (9960).

2⁷⁴³¹² is an apocalyptic number.

It is an amenable number.

74312 is an abundant number, since it is smaller than the sum of its proper divisors (85048).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79680).

74312 is a wasteful number, since it uses less digits than its factorization.

74312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340 (or 1336 counting only the distinct ones).

The product of its digits is 168, while the sum is 17.

The square root of 74312 is about 272.6022743852. The cubic root of 74312 is about 42.0422854552.

Adding to 74312 its reverse (21347), we get a palindrome (95659).

The spelling of 74312 in words is "seventy-four thousand, three hundred twelve", and thus it is an iban number.