74545146 has 24 divisors (see below), whose sum is σ = 173939220. Its totient is φ = 22936896.

The previous prime is 74545129. The next prime is 74545183. The reversal of 74545146 is 64154547.

74545146 is a `hidden beast` number, since 74 + 545 + 1 + 46 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 73359225 + 1185921 = 8565^2 + 1089^2 .

It is a super-2 number, since 2×74545146² = 11113957584322632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74545146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159051 + ... + 159518.

Almost surely, 2^74545146 is an apocalyptic number.

74545146 is an abundant number, since it is smaller than the sum of its proper divisors (99394074).

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

74545146 is a wasteful number, since it uses less digits than its factorization.

74545146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318590 (or 318587 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 74545146 is about 8633.9530922979. The cubic root of 74545146 is about 420.8620728753.

It can be divided in two parts, 74545 and 146, that added together give a triangular number (74691 = T₃₈₆).

The spelling of 74545146 in words is "seventy-four million, five hundred forty-five thousand, one hundred forty-six".