283222720 has 112 divisors (see below), whose sum is σ = 779178528. Its totient is φ = 96911360.

The previous prime is 283222661. The next prime is 283222733. The reversal of 283222720 is 27222382.

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, 57474 + ... + 62206.

Almost surely, 2^283222720 is an apocalyptic number.

283222720 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 283222720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389589264).

283222720 is an abundant number, since it is smaller than the sum of its proper divisors (495955808).

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

283222720 is a wasteful number, since it uses less digits than its factorization.

283222720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4778 (or 4768 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 283222720 is about 16829.2222042494. Note that the first 4 decimals coincide. The cubic root of 283222720 is about 656.7136295042.

It can be divided in two parts, 2832 and 22720, that added together give a palindrome (25552).

The spelling of 283222720 in words is "two hundred eighty-three million, two hundred twenty-two thousand, seven hundred twenty".