283404420 has 120 divisors (see below), whose sum is σ = 957509784. Its totient is φ = 69755904.

The previous prime is 283404419. The next prime is 283404421. The reversal of 283404420 is 24404382.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (283404419) and next prime (283404421).

It can be written as a sum of positive squares in 4 ways, for example, as 67667076 + 215737344 = 8226^2 + 14688^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283404421) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14332 + ... + 27788.

Almost surely, 2^283404420 is an apocalyptic number.

283404420 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 283404420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (478754892).

283404420 is an abundant number, since it is smaller than the sum of its proper divisors (674105364).

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

283404420 is a wasteful number, since it uses less digits than its factorization.

283404420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13491 (or 13480 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 283404420 is about 16834.6196868239. The cubic root of 283404420 is about 656.8540365052.

The spelling of 283404420 in words is "two hundred eighty-three million, four hundred four thousand, four hundred twenty".