74249340 has 192 divisors, whose sum is σ = 247726080. Its totient is φ = 16416000.

The previous prime is 74249323. The next prime is 74249341. The reversal of 74249340 is 4394247.

74249340 = 3043² + 3044² + ... + 3050².

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74249341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 388645 + ... + 388835.

It is an arithmetic number, because the mean of its divisors is an integer number (1290240).

Almost surely, 2^74249340 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 74249340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123863040).

74249340 is an abundant number, since it is smaller than the sum of its proper divisors (173476740).

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

74249340 is a wasteful number, since it uses less digits than its factorization.

74249340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 74249340 is about 8616.8056726376. The cubic root of 74249340 is about 420.3046542438.

The spelling of 74249340 in words is "seventy-four million, two hundred forty-nine thousand, three hundred forty".