4022280 has 48 divisors (see below), whose sum is σ = 13073580. Its totient is φ = 1072512.

The previous prime is 4022257. The next prime is 4022287. The reversal of 4022280 is 822204.

It can be written as a sum of positive squares in 2 ways, for example, as 3992004 + 30276 = 1998^2 + 174^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (4022287) 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, 5227 + ... + 5946.

Almost surely, 2^4022280 is an apocalyptic number.

4022280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4022280 is an abundant number, since it is smaller than the sum of its proper divisors (9051300).

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

4022280 is a wasteful number, since it uses less digits than its factorization.

4022280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11190 (or 11183 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4022280 is about 2005.5622653012. The cubic root of 4022280 is about 159.0342871352.

Adding to 4022280 its reverse (822204), we get a palindrome (4844484).

The spelling of 4022280 in words is "four million, twenty-two thousand, two hundred eighty".