74159380 has 36 divisors (see below), whose sum is σ = 161326620. Its totient is φ = 28634368.

The previous prime is 74159377. The next prime is 74159381. The reversal of 74159380 is 8395147.

It can be written as a sum of positive squares in 6 ways, for example, as 6492304 + 67667076 = 2548^2 + 8226^2 .

It is a super-2 number, since 2×74159380² = 10999227283968800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74159381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14616 + ... + 19024.

It is an arithmetic number, because the mean of its divisors is an integer number (4481295).

Almost surely, 2^74159380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74159380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80663310).

74159380 is an abundant number, since it is smaller than the sum of its proper divisors (87167240).

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

74159380 is a wasteful number, since it uses less digits than its factorization.

74159380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4476 (or 4445 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 74159380 is about 8611.5840586968. The cubic root of 74159380 is about 420.1348395476.

The spelling of 74159380 in words is "seventy-four million, one hundred fifty-nine thousand, three hundred eighty".