4015822 has 4 divisors (see below), whose sum is σ = 6023736. Its totient is φ = 2007910.

The previous prime is 4015819. The next prime is 4015829. The reversal of 4015822 is 2285104.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×4015822² = 32253652671368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4015793 and 4015802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4015829) 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 as a sum of consecutive naturals, namely, 1003954 + ... + 1003957.

It is an arithmetic number, because the mean of its divisors is an integer number (1505934).

Almost surely, 2^4015822 is an apocalyptic number.

4015822 is a deficient number, since it is larger than the sum of its proper divisors (2007914).

4015822 is a wasteful number, since it uses less digits than its factorization.

4015822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007913.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 4015822 is about 2003.9515962218. The cubic root of 4015822 is about 158.9491286698.

The spelling of 4015822 in words is "four million, fifteen thousand, eight hundred twenty-two".