74587240 has 128 divisors (see below), whose sum is σ = 213534720. Its totient is φ = 22809600.

The previous prime is 74587207. The next prime is 74587243. The reversal of 74587240 is 4278547.

It is a self number, because there is not a number n which added to its sum of digits gives 74587240.

It is not an unprimeable number, because it can be changed into a prime (74587243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112510 + ... + 113170.

It is an arithmetic number, because the mean of its divisors is an integer number (1668240).

Almost surely, 2^74587240 is an apocalyptic number.

74587240 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 74587240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106767360).

74587240 is an abundant number, since it is smaller than the sum of its proper divisors (138947480).

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

74587240 is a wasteful number, since it uses less digits than its factorization.

74587240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 74587240 is about 8636.3904497191. The cubic root of 74587240 is about 420.9412751463.

The spelling of 74587240 in words is "seventy-four million, five hundred eighty-seven thousand, two hundred forty".