281420180 has 48 divisors (see below), whose sum is σ = 618516864. Its totient is φ = 107352960.

The previous prime is 281420173. The next prime is 281420207. The reversal of 281420180 is 81024182.

It is a super-2 number, since 2×281420180² = 158394635422464800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203090 + ... + 204470.

It is an arithmetic number, because the mean of its divisors is an integer number (12885768).

Almost surely, 2^281420180 is an apocalyptic number.

281420180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281420180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309258432).

281420180 is an abundant number, since it is smaller than the sum of its proper divisors (337096684).

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

281420180 is a wasteful number, since it uses less digits than its factorization.

281420180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856 (or 1854 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 281420180 is about 16775.5828512752. The cubic root of 281420180 is about 655.3174693953.

The spelling of 281420180 in words is "two hundred eighty-one million, four hundred twenty thousand, one hundred eighty".