74155146 has 32 divisors (see below), whose sum is σ = 165231360. Its totient is φ = 22029504.

The previous prime is 74155129. The next prime is 74155163. The reversal of 74155146 is 64155147.

It is an interprime number because it is at equal distance from previous prime (74155129) and next prime (74155163).

It is a super-3 number, since 3×74155146³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14130 + ... + 18653.

It is an arithmetic number, because the mean of its divisors is an integer number (5163480).

Almost surely, 2^74155146 is an apocalyptic number.

74155146 is an abundant number, since it is smaller than the sum of its proper divisors (91076214).

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

74155146 is a wasteful number, since it uses less digits than its factorization.

74155146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32830.

The product of its digits is 16800, while the sum is 33.

The square root of 74155146 is about 8611.3382235283. The cubic root of 74155146 is about 420.1268437744.

Subtracting from 74155146 its reverse (64155147), we obtain a palindrome (9999999).

It can be divided in two parts, 7415 and 5146, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 74155146 in words is "seventy-four million, one hundred fifty-five thousand, one hundred forty-six".