280052630 has 128 divisors (see below), whose sum is σ = 625121280. Its totient is φ = 88957440.

The previous prime is 280052629. The next prime is 280052659. The reversal of 280052630 is 36250082.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 280052630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3544931 + ... + 3545009.

It is an arithmetic number, because the mean of its divisors is an integer number (4883760).

Almost surely, 2^280052630 is an apocalyptic number.

280052630 is an abundant number, since it is smaller than the sum of its proper divisors (345068650).

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

280052630 is a wasteful number, since it uses less digits than its factorization.

280052630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 280052630 is about 16734.7730788320. The cubic root of 280052630 is about 654.2542490460.

The spelling of 280052630 in words is "two hundred eighty million, fifty-two thousand, six hundred thirty".