280749902160 has 720 divisors, whose sum is σ = 1150927335936. Its totient is φ = 56106473472.

The previous prime is 280749902117. The next prime is 280749902203. The reversal of 280749902160 is 61209947082.

It is an interprime number because it is at equal distance from previous prime (280749902117) and next prime (280749902203).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 55187137 + ... + 55192223.

Almost surely, 2^280749902160 is an apocalyptic number.

280749902160 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 280749902160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575463667968).

280749902160 is an abundant number, since it is smaller than the sum of its proper divisors (870177433776).

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

280749902160 is a wasteful number, since it uses less digits than its factorization.

280749902160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168 (or 5136 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 280749902160 in words is "two hundred eighty billion, seven hundred forty-nine million, nine hundred two thousand, one hundred sixty".