280232492820 has 96 divisors (see below), whose sum is σ = 905124907008. Its totient is φ = 63454503552.

The previous prime is 280232492807. The next prime is 280232492843. The reversal of 280232492820 is 28294232082.

It is a super-2 number, since 2×280232492820² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3072912 + ... + 3162791.

It is an arithmetic number, because the mean of its divisors is an integer number (9428384448).

Almost surely, 2^280232492820 is an apocalyptic number.

280232492820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280232492820 is an abundant number, since it is smaller than the sum of its proper divisors (624892414188).

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

280232492820 is a wasteful number, since it uses less digits than its factorization.

280232492820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6235829 (or 6235827 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 280232492820 in words is "two hundred eighty billion, two hundred thirty-two million, four hundred ninety-two thousand, eight hundred twenty".