283405122 has 256 divisors, whose sum is σ = 870912000. Its totient is φ = 67314240.

The previous prime is 283405097. The next prime is 283405127. The reversal of 283405122 is 221504382.

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

It is not an unprimeable number, because it can be changed into a prime (283405127) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2648593 + ... + 2648699.

It is an arithmetic number, because the mean of its divisors is an integer number (3402000).

Almost surely, 2^283405122 is an apocalyptic number.

283405122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 283405122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435456000).

283405122 is an abundant number, since it is smaller than the sum of its proper divisors (587506878).

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

283405122 is a wasteful number, since it uses less digits than its factorization.

283405122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 283405122 is about 16834.6405367029. The cubic root of 283405122 is about 656.8545788528.

The spelling of 283405122 in words is "two hundred eighty-three million, four hundred five thousand, one hundred twenty-two".