280963000 has 32 divisors (see below), whose sum is σ = 657455760. Its totient is φ = 112384800.

The previous prime is 280962977. The next prime is 280963003. The reversal of 280963000 is 369082.

It is a self number, because there is not a number n which added to its sum of digits gives 280963000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280963003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139482 + ... + 141481.

Almost surely, 2^280963000 is an apocalyptic number.

280963000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280963000 is an abundant number, since it is smaller than the sum of its proper divisors (376492760).

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

280963000 is a wasteful number, since it uses less digits than its factorization.

280963000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280984 (or 280970 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 280963000 is about 16761.9509604342. The cubic root of 280963000 is about 654.9624126208.

The spelling of 280963000 in words is "two hundred eighty million, nine hundred sixty-three thousand".