4155822 has 48 divisors (see below), whose sum is σ = 9959040. Its totient is φ = 1242000.

The previous prime is 4155797. The next prime is 4155839. The reversal of 4155822 is 2285514.

It is a happy number.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27447 + ... + 27597.

It is an arithmetic number, because the mean of its divisors is an integer number (207480).

Almost surely, 2^4155822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4155822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4979520).

4155822 is an abundant number, since it is smaller than the sum of its proper divisors (5803218).

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

4155822 is a wasteful number, since it uses less digits than its factorization.

4155822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 306 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 4155822 is about 2038.5833316301. The cubic root of 4155822 is about 160.7751706669.

The spelling of 4155822 in words is "four million, one hundred fifty-five thousand, eight hundred twenty-two".