280142630 has 32 divisors (see below), whose sum is σ = 519631200. Its totient is φ = 108689152.

The previous prime is 280142623. The next prime is 280142633. The reversal of 280142630 is 36241082.

It is a self number, because there is not a number n which added to its sum of digits gives 280142630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280142633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44201 + ... + 50139.

It is an arithmetic number, because the mean of its divisors is an integer number (16238475).

Almost surely, 2^280142630 is an apocalyptic number.

280142630 is a deficient number, since it is larger than the sum of its proper divisors (239488570).

280142630 is a wasteful number, since it uses less digits than its factorization.

280142630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6088.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 280142630 is about 16737.4618744898. The cubic root of 280142630 is about 654.3243270355.

The spelling of 280142630 in words is "two hundred eighty million, one hundred forty-two thousand, six hundred thirty".