74280000 has 140 divisors (see below), whose sum is σ = 245983760. Its totient is φ = 19776000.

The previous prime is 74279993. The next prime is 74280001. The reversal of 74280000 is 8247.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (74280001) 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 19 ways as a sum of consecutive naturals, for example, 119691 + ... + 120309.

Almost surely, 2^74280000 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 74280000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122991880).

74280000 is an abundant number, since it is smaller than the sum of its proper divisors (171703760).

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

74280000 is an equidigital number, since it uses as much as digits as its factorization.

74280000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 74280000 is about 8618.5845705661. The cubic root of 74280000 is about 420.3624988314.

Adding to 74280000 its reverse (8247), we get a palindrome (74288247).

The spelling of 74280000 in words is "seventy-four million, two hundred eighty thousand".