74580240 has 160 divisors (see below), whose sum is σ = 267411456. Its totient is φ = 16842240.

The previous prime is 74580229. The next prime is 74580277. The reversal of 74580240 is 4208547.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 74580198 and 74580207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172825 + ... + 173255.

Almost surely, 2^74580240 is an apocalyptic number.

74580240 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74580240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133705728).

74580240 is an abundant number, since it is smaller than the sum of its proper divisors (192831216).

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

74580240 is a wasteful number, since it uses less digits than its factorization.

74580240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 74580240 is about 8635.9851783106. The cubic root of 74580240 is about 420.9281063116.

Adding to 74580240 its reverse (4208547), we get a palindrome (78788787).

The spelling of 74580240 in words is "seventy-four million, five hundred eighty thousand, two hundred forty".