74020 has 12 divisors (see below), whose sum is σ = 155484. Its totient is φ = 29600.

The previous prime is 74017. The next prime is 74021. The reversal of 74020 is 2047.

It can be written as a sum of positive squares in 2 ways, for example, as 28224 + 45796 = 168^2 + 214^2 .

It is not an unprimeable number, because it can be changed into a prime (74021) 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, 1831 + ... + 1870.

It is an arithmetic number, because the mean of its divisors is an integer number (12957).

2⁷⁴⁰²⁰ is an apocalyptic number.

It is an amenable number.

74020 is an abundant number, since it is smaller than the sum of its proper divisors (81464).

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 (77742).

74020 is a wasteful number, since it uses less digits than its factorization.

74020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710 (or 3708 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 74020 is about 272.0661684223. The cubic root of 74020 is about 41.9871464825.

Adding to 74020 its reverse (2047), we get a palindrome (76067).

The spelling of 74020 in words is "seventy-four thousand, twenty", and thus it is an iban number.