280930122 has 96 divisors (see below), whose sum is σ = 704530944. Its totient is φ = 80092800.

The previous prime is 280930121. The next prime is 280930123. The reversal of 280930122 is 221039082.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (280930121) and next prime (280930123).

It is not an unprimeable number, because it can be changed into a prime (280930121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 226488 + ... + 227724.

It is an arithmetic number, because the mean of its divisors is an integer number (7338864).

Almost surely, 2^280930122 is an apocalyptic number.

280930122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 280930122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352265472).

280930122 is an abundant number, since it is smaller than the sum of its proper divisors (423600822).

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

280930122 is a wasteful number, since it uses less digits than its factorization.

280930122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 280930122 is about 16760.9701986490. The cubic root of 280930122 is about 654.9368639492.

Subtracting from 280930122 its reverse (221039082), we obtain a triangular number (59891040 = T₁₀₉₄₄).

The spelling of 280930122 in words is "two hundred eighty million, nine hundred thirty thousand, one hundred twenty-two".