280607040 has 336 divisors, whose sum is σ = 1141171200. Its totient is φ = 61931520.

The previous prime is 280607027. The next prime is 280607051. The reversal of 280607040 is 40706082.

It is a tau number, because it is divible by the number of its divisors (336).

It is a junction number, because it is equal to n+sod(n) for n = 280606995 and 280607013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 624736 + ... + 625184.

Almost surely, 2^280607040 is an apocalyptic number.

280607040 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 280607040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570585600).

280607040 is an abundant number, since it is smaller than the sum of its proper divisors (860564160).

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

280607040 is a wasteful number, since it uses less digits than its factorization.

280607040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 280607040 is about 16751.3294994756. The cubic root of 280607040 is about 654.6856989050.

The spelling of 280607040 in words is "two hundred eighty million, six hundred seven thousand, forty".