74152247 has 16 divisors (see below), whose sum is σ = 81865728. Its totient is φ = 66743040.

The previous prime is 74152241. The next prime is 74152259. The reversal of 74152247 is 74225147.

It is not a de Polignac number, because 74152247 - 2⁸ = 74151991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74152241) 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, 193418 + ... + 193800.

It is an arithmetic number, because the mean of its divisors is an integer number (5116608).

Almost surely, 2^74152247 is an apocalyptic number.

74152247 is a deficient number, since it is larger than the sum of its proper divisors (7713481).

74152247 is a wasteful number, since it uses less digits than its factorization.

74152247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730.

The product of its digits is 15680, while the sum is 32.

The square root of 74152247 is about 8611.1698972904. The cubic root of 74152247 is about 420.1213689302.

Subtracting 74152247 from its reverse (74225147), we obtain a square (72900 = 270²).

The spelling of 74152247 in words is "seventy-four million, one hundred fifty-two thousand, two hundred forty-seven".