74339790 has 64 divisors (see below), whose sum is σ = 206530560. Its totient is φ = 16773120.

The previous prime is 74339779. The next prime is 74339801. The reversal of 74339790 is 9793347.

It is an interprime number because it is at equal distance from previous prime (74339779) and next prime (74339801).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14350 + ... + 18830.

It is an arithmetic number, because the mean of its divisors is an integer number (3227040).

Almost surely, 2^74339790 is an apocalyptic number.

74339790 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 74339790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103265280).

74339790 is an abundant number, since it is smaller than the sum of its proper divisors (132190770).

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

74339790 is a wasteful number, since it uses less digits than its factorization.

74339790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4577.

The product of its (nonzero) digits is 142884, while the sum is 42.

The square root of 74339790 is about 8622.0525398538. The cubic root of 74339790 is about 420.4752556671.

The spelling of 74339790 in words is "seventy-four million, three hundred thirty-nine thousand, seven hundred ninety".