280997338362 has 64 divisors (see below), whose sum is σ = 637366907520. Its totient is φ = 81873137664.

The previous prime is 280997338327. The next prime is 280997338387. The reversal of 280997338362 is 263833799082.

It is a junction number, because it is equal to n+sod(n) for n = 280997338296 and 280997338305.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3326878 + ... + 3410294.

It is an arithmetic number, because the mean of its divisors is an integer number (9958857930).

Almost surely, 2^280997338362 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280997338362, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318683453760).

280997338362 is an abundant number, since it is smaller than the sum of its proper divisors (356369569158).

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

280997338362 is a wasteful number, since it uses less digits than its factorization.

280997338362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85727.

The product of its (nonzero) digits is 23514624, while the sum is 60.

The spelling of 280997338362 in words is "two hundred eighty billion, nine hundred ninety-seven million, three hundred thirty-eight thousand, three hundred sixty-two".