280472544 has 168 divisors, whose sum is σ = 903980952. Its totient is φ = 84913920.

The previous prime is 280472539. The next prime is 280472561. The reversal of 280472544 is 445274082.

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

It is a junction number, because it is equal to n+sod(n) for n = 280472499 and 280472508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 256062 + ... + 257154.

It is an arithmetic number, because the mean of its divisors is an integer number (5380839).

Almost surely, 2^280472544 is an apocalyptic number.

280472544 is a gapful number since it is divisible by the number (24) 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 280472544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451990476).

280472544 is an abundant number, since it is smaller than the sum of its proper divisors (623508408).

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

280472544 is a wasteful number, since it uses less digits than its factorization.

280472544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1109 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 280472544 is about 16747.3145309927. The cubic root of 280472544 is about 654.5810844241.

The spelling of 280472544 in words is "two hundred eighty million, four hundred seventy-two thousand, five hundred forty-four".