280961052 has 24 divisors (see below), whose sum is σ = 655846800. Its totient is φ = 93614976.

The previous prime is 280961041. The next prime is 280961111. The reversal of 280961052 is 250169082.

It is a super-2 number, since 2×280961052² = 157878225481893408, which contains 22 as substring.

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, 55024 + ... + 59912.

It is an arithmetic number, because the mean of its divisors is an integer number (27326950).

Almost surely, 2^280961052 is an apocalyptic number.

It is an amenable number.

280961052 is an abundant number, since it is smaller than the sum of its proper divisors (374885748).

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

280961052 is a wasteful number, since it uses less digits than its factorization.

280961052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9685 (or 9683 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 280961052 is about 16761.8928525391. The cubic root of 280961052 is about 654.9608989342.

The spelling of 280961052 in words is "two hundred eighty million, nine hundred sixty-one thousand, fifty-two".