283400 has 48 divisors (see below), whose sum is σ = 716100. Its totient is φ = 103680.

The previous prime is 283397. The next prime is 283403. The reversal of 283400 is 4382.

283400 is nontrivially palindromic in base 15.

It is an interprime number because it is at equal distance from previous prime (283397) and next prime (283403).

It can be written as a sum of positive squares in 6 ways, for example, as 77284 + 206116 = 278^2 + 454^2 .

It is not an unprimeable number, because it can be changed into a prime (283403) 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, 2546 + ... + 2654.

2²⁸³⁴⁰⁰ is an apocalyptic number.

283400 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 283400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358050).

283400 is an abundant number, since it is smaller than the sum of its proper divisors (432700).

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

283400 is a wasteful number, since it uses less digits than its factorization.

283400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 283400 is about 532.3532661682. The cubic root of 283400 is about 65.6850621703.

Adding to 283400 its reverse (4382), we get a palindrome (287782).

The spelling of 283400 in words is "two hundred eighty-three thousand, four hundred".