74980 has 24 divisors (see below), whose sum is σ = 165312. Its totient is φ = 28512.
The previous prime is 74959. The next prime is 75011. The reversal of 74980 is 8947.
It is a plaindrome in base 8.
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 7 ways as a sum of consecutive naturals, for example, 379 + ... + 541.
It is an arithmetic number, because the mean of its divisors is an integer number (6888).
274980 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 74980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82656).
74980 is an abundant number, since it is smaller than the sum of its proper divisors (90332).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
74980 is a wasteful number, since it uses less digits than its factorization.
74980 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 195 (or 193 counting only the distinct ones).
The product of its (nonzero) digits is 2016, while the sum is 28.
The square root of 74980 is about 273.8247614808. The cubic root of 74980 is about 42.1678843422.
The spelling of 74980 in words is "seventy-four thousand, nine hundred eighty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.068 sec. • engine limits •