74289813 has 32 divisors (see below), whose sum is σ = 114307200. Its totient is φ = 42510336.

The previous prime is 74289811. The next prime is 74289823. The reversal of 74289813 is 31898247.

It is not a de Polignac number, because 74289813 - 2¹ = 74289811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74289811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58378 + ... + 59636.

It is an arithmetic number, because the mean of its divisors is an integer number (3572100).

Almost surely, 2^74289813 is an apocalyptic number.

It is an amenable number.

74289813 is a deficient number, since it is larger than the sum of its proper divisors (40017387).

74289813 is a wasteful number, since it uses less digits than its factorization.

74289813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381.

The product of its digits is 96768, while the sum is 42.

The square root of 74289813 is about 8619.1538447808. The cubic root of 74289813 is about 420.3810091328.

The spelling of 74289813 in words is "seventy-four million, two hundred eighty-nine thousand, eight hundred thirteen".