74509340 has 24 divisors (see below), whose sum is σ = 157272192. Its totient is φ = 29650880.

The previous prime is 74509327. The next prime is 74509363. The reversal of 74509340 is 4390547.

It is a junction number, because it is equal to n+sod(n) for n = 74509297 and 74509306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5516 + ... + 13395.

It is an arithmetic number, because the mean of its divisors is an integer number (6553008).

Almost surely, 2^74509340 is an apocalyptic number.

It is an amenable number.

74509340 is an abundant number, since it is smaller than the sum of its proper divisors (82762852).

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

74509340 is a wasteful number, since it uses less digits than its factorization.

74509340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19117 (or 19115 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 74509340 is about 8631.8792855322. The cubic root of 74509340 is about 420.7946783652.

Adding to 74509340 its reverse (4390547), we get a palindrome (78899887).

The spelling of 74509340 in words is "seventy-four million, five hundred nine thousand, three hundred forty".