74030247 has 16 divisors (see below), whose sum is σ = 109831680. Its totient is φ = 49282776.

The previous prime is 74030239. The next prime is 74030321. The reversal of 74030247 is 74203047.

It is not a de Polignac number, because 74030247 - 2³ = 74030239 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 74030247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74030237) 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, 22978 + ... + 26000.

It is an arithmetic number, because the mean of its divisors is an integer number (6864480).

Almost surely, 2^74030247 is an apocalyptic number.

74030247 is the 5442-nd heptagonal number.

74030247 is a deficient number, since it is larger than the sum of its proper divisors (35801433).

74030247 is a wasteful number, since it uses less digits than its factorization.

74030247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939 (or 3933 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 74030247 is about 8604.0831585939. The cubic root of 74030247 is about 419.8908389777.

The spelling of 74030247 in words is "seventy-four million, thirty thousand, two hundred forty-seven".