280052760 has 128 divisors (see below), whose sum is σ = 934133760. Its totient is φ = 66700800.

The previous prime is 280052753. The next prime is 280052767. The reversal of 280052760 is 67250082.

It is an interprime number because it is at equal distance from previous prime (280052753) and next prime (280052767).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280052767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45465 + ... + 51255.

It is an arithmetic number, because the mean of its divisors is an integer number (7297920).

Almost surely, 2^280052760 is an apocalyptic number.

280052760 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 280052760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (467066880).

280052760 is an abundant number, since it is smaller than the sum of its proper divisors (654081000).

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

280052760 is a wasteful number, since it uses less digits than its factorization.

280052760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5849 (or 5845 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 280052760 is about 16734.7769629595. The cubic root of 280052760 is about 654.2543502806.

The spelling of 280052760 in words is "two hundred eighty million, fifty-two thousand, seven hundred sixty".