74055280 has 80 divisors (see below), whose sum is σ = 191487744. Its totient is φ = 26449920.

The previous prime is 74055271. The next prime is 74055283. The reversal of 74055280 is 8255047.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74055283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31092 + ... + 33388.

Almost surely, 2^74055280 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 74055280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95743872).

74055280 is an abundant number, since it is smaller than the sum of its proper divisors (117432464).

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

74055280 is a wasteful number, since it uses less digits than its factorization.

74055280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354 (or 2348 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 74055280 is about 8605.5377519362. The cubic root of 74055280 is about 419.9381617196.

The spelling of 74055280 in words is "seventy-four million, fifty-five thousand, two hundred eighty".