280500380160 has 1920 divisors, whose sum is σ = 1263951101952. Its totient is φ = 51580108800.

The previous prime is 280500380113. The next prime is 280500380161. The reversal of 280500380160 is 61083005082.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280500380161) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2621498827 + ... + 2621498933.

Almost surely, 2^280500380160 is an apocalyptic number.

280500380160 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 280500380160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631975550976).

280500380160 is an abundant number, since it is smaller than the sum of its proper divisors (983450721792).

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

280500380160 is a wasteful number, since it uses less digits than its factorization.

280500380160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 280500380160 in words is "two hundred eighty billion, five hundred million, three hundred eighty thousand, one hundred sixty".