280228374 has 48 divisors (see below), whose sum is σ = 645362640. Its totient is φ = 87575040.

The previous prime is 280228369. The next prime is 280228381. The reversal of 280228374 is 473822082.

280228374 is a `hidden beast` number, since 280 + 2 + 2 + 8 + 374 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84357 + ... + 87615.

It is an arithmetic number, because the mean of its divisors is an integer number (13445055).

Almost surely, 2^280228374 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280228374, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322681320).

280228374 is an abundant number, since it is smaller than the sum of its proper divisors (365134266).

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

280228374 is a wasteful number, since it uses less digits than its factorization.

280228374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3565 (or 3562 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 280228374 is about 16740.0231182636. The cubic root of 280228374 is about 654.3910771550.

The spelling of 280228374 in words is "two hundred eighty million, two hundred twenty-eight thousand, three hundred seventy-four".