280830552 has 64 divisors (see below), whose sum is σ = 735989760. Its totient is φ = 89126400.

The previous prime is 280830533. The next prime is 280830559. The reversal of 280830552 is 255038082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280830559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131977 + ... + 134087.

It is an arithmetic number, because the mean of its divisors is an integer number (11499840).

Almost surely, 2^280830552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280830552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367994880).

280830552 is an abundant number, since it is smaller than the sum of its proper divisors (455159208).

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

280830552 is a wasteful number, since it uses less digits than its factorization.

280830552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384 (or 2380 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 280830552 is about 16757.9996419620. Note that the first 3 decimals coincide. The cubic root of 280830552 is about 654.8594784308.

The spelling of 280830552 in words is "two hundred eighty million, eight hundred thirty thousand, five hundred fifty-two".