280641948 has 24 divisors (see below), whose sum is σ = 658454160. Its totient is φ = 93029760.

The previous prime is 280641923. The next prime is 280641953. The reversal of 280641948 is 849146082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62433 + ... + 66776.

It is an arithmetic number, because the mean of its divisors is an integer number (27435590).

Almost surely, 2^280641948 is an apocalyptic number.

It is an amenable number.

280641948 is an abundant number, since it is smaller than the sum of its proper divisors (377812212).

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

280641948 is a wasteful number, since it uses less digits than its factorization.

280641948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129397 (or 129395 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 280641948 is about 16752.3714142207. The cubic root of 280641948 is about 654.7128457896.

The spelling of 280641948 in words is "two hundred eighty million, six hundred forty-one thousand, nine hundred forty-eight".