74485144 has 16 divisors (see below), whose sum is σ = 143434800. Its totient is φ = 36235872.

The previous prime is 74485141. The next prime is 74485183. The reversal of 74485144 is 44158447.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74485141) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 125524 + ... + 126115.

It is an arithmetic number, because the mean of its divisors is an integer number (8964675).

Almost surely, 2^74485144 is an apocalyptic number.

74485144 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

74485144 is a deficient number, since it is larger than the sum of its proper divisors (68949656).

74485144 is a wasteful number, since it uses less digits than its factorization.

74485144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251682 (or 251678 counting only the distinct ones).

The product of its digits is 71680, while the sum is 37.

The square root of 74485144 is about 8630.4776229361. The cubic root of 74485144 is about 420.7491241195.

The spelling of 74485144 in words is "seventy-four million, four hundred eighty-five thousand, one hundred forty-four".