280481488 has 60 divisors (see below), whose sum is σ = 634593312. Its totient is φ = 119743680.

The previous prime is 280481479. The next prime is 280481489. The reversal of 280481488 is 884184082.

It is a happy number.

It is a super-2 number, since 2×280481488² = 157339730221388288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280481489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 271533 + ... + 272563.

Almost surely, 2^280481488 is an apocalyptic number.

280481488 is a gapful number since it is divisible by the number (28) 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 280481488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317296656).

280481488 is an abundant number, since it is smaller than the sum of its proper divisors (354111824).

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

280481488 is a wasteful number, since it uses less digits than its factorization.

280481488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 43.

The square root of 280481488 is about 16747.5815567502. The cubic root of 280481488 is about 654.5880423375.

The spelling of 280481488 in words is "two hundred eighty million, four hundred eighty-one thousand, four hundred eighty-eight".