4022590 has 64 divisors (see below), whose sum is σ = 8890560. Its totient is φ = 1290240.

The previous prime is 4022587. The next prime is 4022593. The reversal of 4022590 is 952204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4022587) and next prime (4022593).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4022593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41422 + ... + 41518.

It is an arithmetic number, because the mean of its divisors is an integer number (138915).

Almost surely, 2^4022590 is an apocalyptic number.

4022590 is an abundant number, since it is smaller than the sum of its proper divisors (4867970).

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

4022590 is a wasteful number, since it uses less digits than its factorization.

4022590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 4022590 is about 2005.6395488721. The cubic root of 4022590 is about 159.0383726590.

Adding to 4022590 its reverse (952204), we get a palindrome (4974794).

It can be divided in two parts, 402 and 2590, that added together give a palindrome (2992).

The spelling of 4022590 in words is "four million, twenty-two thousand, five hundred ninety".