280055022 has 64 divisors (see below), whose sum is σ = 641571840. Its totient is φ = 80784000.

The previous prime is 280054981. The next prime is 280055029. The reversal of 280055022 is 220550082.

It is a junction number, because it is equal to n+sod(n) for n = 280054983 and 280055001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280055029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148747 + ... + 150617.

It is an arithmetic number, because the mean of its divisors is an integer number (10024560).

Almost surely, 2^280055022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280055022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320785920).

280055022 is an abundant number, since it is smaller than the sum of its proper divisors (361516818).

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

280055022 is a wasteful number, since it uses less digits than its factorization.

280055022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 280055022 is about 16734.8445466338. The cubic root of 280055022 is about 654.2561117574.

The spelling of 280055022 in words is "two hundred eighty million, fifty-five thousand, twenty-two".