74389830 has 16 divisors (see below), whose sum is σ = 178535664. Its totient is φ = 19837280.

The previous prime is 74389823. The next prime is 74389837. The reversal of 74389830 is 3898347.

It is an interprime number because it is at equal distance from previous prime (74389823) and next prime (74389837).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74389837) 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 7 ways as a sum of consecutive naturals, for example, 1239801 + ... + 1239860.

It is an arithmetic number, because the mean of its divisors is an integer number (11158479).

Almost surely, 2^74389830 is an apocalyptic number.

74389830 is an abundant number, since it is smaller than the sum of its proper divisors (104145834).

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

74389830 is a wasteful number, since it uses less digits than its factorization.

74389830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479671.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 74389830 is about 8624.9539129203. The cubic root of 74389830 is about 420.5695786964.

The spelling of 74389830 in words is "seventy-four million, three hundred eighty-nine thousand, eight hundred thirty".