4023522 has 12 divisors (see below), whose sum is σ = 8717670. Its totient is φ = 1341168.

The previous prime is 4023511. The next prime is 4023533. The reversal of 4023522 is 2253204.

It is an interprime number because it is at equal distance from previous prime (4023511) and next prime (4023533).

It can be written as a sum of positive squares in only one way, i.e., 3381921 + 641601 = 1839^2 + 801^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 223529 = 4023522 / (4 + 0 + 2 + 3 + 5 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 4023495 and 4023504.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111747 + ... + 111782.

Almost surely, 2^4023522 is an apocalyptic number.

4023522 is an abundant number, since it is smaller than the sum of its proper divisors (4694148).

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

4023522 is a wasteful number, since it uses less digits than its factorization.

4023522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223537 (or 223534 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 4023522 is about 2005.8718802556. The cubic root of 4023522 is about 159.0506543248.

Adding to 4023522 its reverse (2253204), we get a palindrome (6276726).

The spelling of 4023522 in words is "four million, twenty-three thousand, five hundred twenty-two".