74156 has 6 divisors (see below), whose sum is σ = 129780. Its totient is φ = 37076.

The previous prime is 74149. The next prime is 74159. The reversal of 74156 is 65147.

It is a super-2 number, since 2×74156² = 10998224672, which contains 22 as substring.

It is a nialpdrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (74159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9266 + ... + 9273.

It is an arithmetic number, because the mean of its divisors is an integer number (21630).

2⁷⁴¹⁵⁶ is an apocalyptic number.

It is an amenable number.

74156 is a deficient number, since it is larger than the sum of its proper divisors (55624).

74156 is a wasteful number, since it uses less digits than its factorization.

74156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18543 (or 18541 counting only the distinct ones).

The product of its digits is 840, while the sum is 23.

The square root of 74156 is about 272.3159929200. The cubic root of 74156 is about 42.0128456550.

Subtracting from 74156 its reverse (65147), we obtain a palindrome (9009).

It can be divided in two parts, 741 and 56, that added together give a palindrome (797).

The spelling of 74156 in words is "seventy-four thousand, one hundred fifty-six".