74644130 has 48 divisors (see below), whose sum is σ = 150470784. Its totient is φ = 26439840.

The previous prime is 74644117. The next prime is 74644139. The reversal of 74644130 is 3144647.

It is a super-2 number, since 2×74644130² = 11143492286913800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74644093 and 74644102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74644139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203207 + ... + 203573.

It is an arithmetic number, because the mean of its divisors is an integer number (3134808).

Almost surely, 2^74644130 is an apocalyptic number.

74644130 is an abundant number, since it is smaller than the sum of its proper divisors (75826654).

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

74644130 is a wasteful number, since it uses less digits than its factorization.

74644130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 74644130 is about 8639.6834432750. The cubic root of 74644130 is about 421.0482696012.

Adding to 74644130 its reverse (3144647), we get a palindrome (77788777).

The spelling of 74644130 in words is "seventy-four million, six hundred forty-four thousand, one hundred thirty".