280901223 has 16 divisors (see below), whose sum is σ = 418912000. Its totient is φ = 186024600.

The previous prime is 280901213. The next prime is 280901237. The reversal of 280901223 is 322109082.

It is a happy number.

It is not a de Polignac number, because 280901223 - 2⁵ = 280901191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280901213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30373 + ... + 38526.

It is an arithmetic number, because the mean of its divisors is an integer number (26182000).

Almost surely, 2^280901223 is an apocalyptic number.

280901223 is a deficient number, since it is larger than the sum of its proper divisors (138010777).

280901223 is a wasteful number, since it uses less digits than its factorization.

280901223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69059 (or 69053 counting only the distinct ones).

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

The square root of 280901223 is about 16760.1080843770. The cubic root of 280901223 is about 654.9144056129.

The spelling of 280901223 in words is "two hundred eighty million, nine hundred one thousand, two hundred twenty-three".