280901222 has 16 divisors (see below), whose sum is σ = 491373600. Its totient is φ = 120385944.

The previous prime is 280901213. The next prime is 280901237. The reversal of 280901222 is 222109082.

It is a junction number, because it is equal to n+sod(n) for n = 280901191 and 280901200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204053 + ... + 205424.

It is an arithmetic number, because the mean of its divisors is an integer number (30710850).

Almost surely, 2^280901222 is an apocalyptic number.

280901222 is a deficient number, since it is larger than the sum of its proper divisors (210472378).

280901222 is an equidigital number, since it uses as much as digits as its factorization.

280901222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409500 (or 409486 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 280901222 is about 16760.1080545443. The cubic root of 280901222 is about 654.9144048358.

The spelling of 280901222 in words is "two hundred eighty million, nine hundred one thousand, two hundred twenty-two".