280140652 has 18 divisors (see below), whose sum is σ = 538866524. Its totient is φ = 127336440.

The previous prime is 280140643. The next prime is 280140661. The reversal of 280140652 is 256041082.

It is an interprime number because it is at equal distance from previous prime (280140643) and next prime (280140661).

It is a self number, because there is not a number n which added to its sum of digits gives 280140652.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288918 + ... + 289885.

Almost surely, 2^280140652 is an apocalyptic number.

280140652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

280140652 is a deficient number, since it is larger than the sum of its proper divisors (258725872).

280140652 is a wasteful number, since it uses less digits than its factorization.

280140652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578829 (or 578816 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 280140652 is about 16737.4027853786. The cubic root of 280140652 is about 654.3227870384.

The spelling of 280140652 in words is "two hundred eighty million, one hundred forty thousand, six hundred fifty-two".