280954968 has 64 divisors (see below), whose sum is σ = 812928000. Its totient is φ = 79252992.

The previous prime is 280954963. The next prime is 280954997. The reversal of 280954968 is 869459082.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 280954968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280954963) 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, 2688 + ... + 23856.

It is an arithmetic number, because the mean of its divisors is an integer number (12702000).

Almost surely, 2^280954968 is an apocalyptic number.

280954968 is a gapful number since it is divisible by the number (28) 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 280954968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406464000).

280954968 is an abundant number, since it is smaller than the sum of its proper divisors (531973032).

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

280954968 is a wasteful number, since it uses less digits than its factorization.

280954968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21264 (or 21260 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The square root of 280954968 is about 16761.7113684731. The cubic root of 280954968 is about 654.9561713384.

The spelling of 280954968 in words is "two hundred eighty million, nine hundred fifty-four thousand, nine hundred sixty-eight".