280440948 has 24 divisors (see below), whose sum is σ = 654663520. Its totient is φ = 93437280.

The previous prime is 280440947. The next prime is 280440971. The reversal of 280440948 is 849044082.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280440947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32358 + ... + 40098.

Almost surely, 2^280440948 is an apocalyptic number.

It is an amenable number.

280440948 is an abundant number, since it is smaller than the sum of its proper divisors (374222572).

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

280440948 is a wasteful number, since it uses less digits than its factorization.

280440948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10767 (or 10765 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 280440948 is about 16746.3711890069. The cubic root of 280440948 is about 654.5565033839.

The spelling of 280440948 in words is "two hundred eighty million, four hundred forty thousand, nine hundred forty-eight".