74518452 has 18 divisors (see below), whose sum is σ = 188366178. Its totient is φ = 24839472.

The previous prime is 74518439. The next prime is 74518469. The reversal of 74518452 is 25481547.

It can be written as a sum of positive squares in only one way, i.e., 73205136 + 1313316 = 8556^2 + 1146^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2069957 = 74518452 / (7 + 4 + 5 + 1 + 8 + 4 + 5 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1034943 + ... + 1035014.

Almost surely, 2^74518452 is an apocalyptic number.

It is an amenable number.

74518452 is an abundant number, since it is smaller than the sum of its proper divisors (113847726).

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

74518452 is a wasteful number, since it uses less digits than its factorization.

74518452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069967 (or 2069962 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 74518452 is about 8632.4070802992. The cubic root of 74518452 is about 420.8118311357.

Adding to 74518452 its reverse (25481547), we get a palindrome (99999999).

The spelling of 74518452 in words is "seventy-four million, five hundred eighteen thousand, four hundred fifty-two".