280501013880 has 384 divisors, whose sum is σ = 1019922321600. Its totient is φ = 69069791232.

The previous prime is 280501013879. The next prime is 280501013909. The reversal of 280501013880 is 88310105082.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 95 ways as a sum of consecutive naturals, for example, 8741706 + ... + 8773734.

Almost surely, 2^280501013880 is an apocalyptic number.

280501013880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280501013880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (509961160800).

280501013880 is an abundant number, since it is smaller than the sum of its proper divisors (739421307720).

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

280501013880 is a wasteful number, since it uses less digits than its factorization.

280501013880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32125 (or 32109 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The spelling of 280501013880 in words is "two hundred eighty billion, five hundred one million, thirteen thousand, eight hundred eighty".