280740096 has 324 divisors, whose sum is σ = 1011436608. Its totient is φ = 73322496.

The previous prime is 280740041. The next prime is 280740121. The reversal of 280740096 is 690047082.

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

It is a self number, because there is not a number n which added to its sum of digits gives 280740096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2725581 + ... + 2725683.

Almost surely, 2^280740096 is an apocalyptic number.

280740096 is a gapful number since it is divisible by the number (26) 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 280740096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (505718304).

280740096 is an abundant number, since it is smaller than the sum of its proper divisors (730696512).

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

280740096 is a wasteful number, since it uses less digits than its factorization.

280740096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 280740096 is about 16755.3005344577. The cubic root of 280740096 is about 654.7891604286.

The spelling of 280740096 in words is "two hundred eighty million, seven hundred forty thousand, ninety-six".