280142628 has 12 divisors (see below), whose sum is σ = 653666160. Its totient is φ = 93380872.

The previous prime is 280142623. The next prime is 280142633. The reversal of 280142628 is 826241082.

It is a happy number.

280142628 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (280142623) and next prime (280142633).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (280142623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11672598 + ... + 11672621.

It is an arithmetic number, because the mean of its divisors is an integer number (54472180).

Almost surely, 2^280142628 is an apocalyptic number.

It is an amenable number.

280142628 is an abundant number, since it is smaller than the sum of its proper divisors (373523532).

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

280142628 is a wasteful number, since it uses less digits than its factorization.

280142628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23345226 (or 23345224 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 280142628 is about 16737.4618147436. The cubic root of 280142628 is about 654.3243254784.

The spelling of 280142628 in words is "two hundred eighty million, one hundred forty-two thousand, six hundred twenty-eight".