74230209 has 16 divisors (see below), whose sum is σ = 110170240. Its totient is φ = 49397040.

The previous prime is 74230187. The next prime is 74230231. The reversal of 74230209 is 90203247.

It is an interprime number because it is at equal distance from previous prime (74230187) and next prime (74230231).

It is a de Polignac number, because none of the positive numbers 2^k-74230209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74232209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14859 + ... + 19215.

It is an arithmetic number, because the mean of its divisors is an integer number (6885640).

Almost surely, 2^74230209 is an apocalyptic number.

It is an amenable number.

74230209 is a deficient number, since it is larger than the sum of its proper divisors (35940031).

74230209 is a wasteful number, since it uses less digits than its factorization.

74230209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4997 (or 4991 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 74230209 is about 8615.6955029759. The cubic root of 74230209 is about 420.2685527375.

The spelling of 74230209 in words is "seventy-four million, two hundred thirty thousand, two hundred nine".