20349822 has 16 divisors (see below), whose sum is σ = 42103440. Its totient is φ = 6549312.

The previous prime is 20349821. The next prime is 20349839. The reversal of 20349822 is 22894302.

It is a self number, because there is not a number n which added to its sum of digits gives 20349822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20349821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58303 + ... + 58650.

It is an arithmetic number, because the mean of its divisors is an integer number (2631465).

Almost surely, 2^20349822 is an apocalyptic number.

20349822 is an abundant number, since it is smaller than the sum of its proper divisors (21753618).

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

20349822 is a wasteful number, since it uses less digits than its factorization.

20349822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116987.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 20349822 is about 4511.0776982890. The cubic root of 20349822 is about 273.0152281218.

The spelling of 20349822 in words is "twenty million, three hundred forty-nine thousand, eight hundred twenty-two".