283420881 has 12 divisors (see below), whose sum is σ = 427185408. Its totient is φ = 180732024.

The previous prime is 283420873. The next prime is 283420901. The reversal of 283420881 is 188024382.

It is a happy number.

It is not a de Polignac number, because 283420881 - 2³ = 283420873 is a prime.

It is a super-2 number, since 2×283420881² = 160654791573632322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (283428881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 684385 + ... + 684798.

It is an arithmetic number, because the mean of its divisors is an integer number (35598784).

Almost surely, 2^283420881 is an apocalyptic number.

It is an amenable number.

283420881 is a deficient number, since it is larger than the sum of its proper divisors (143764527).

283420881 is a wasteful number, since it uses less digits than its factorization.

283420881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369212 (or 1369209 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 283420881 is about 16835.1085829584. The cubic root of 283420881 is about 656.8667536263.

The spelling of 283420881 in words is "two hundred eighty-three million, four hundred twenty thousand, eight hundred eighty-one".