30423822 has 64 divisors (see below), whose sum is σ = 72817920. Its totient is φ = 8352000.

The previous prime is 30423793. The next prime is 30423823. The reversal of 30423822 is 22832403.

It is a junction number, because it is equal to n+sod(n) for n = 30423792 and 30423801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30423823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50322 + ... + 50922.

It is an arithmetic number, because the mean of its divisors is an integer number (1137780).

Almost surely, 2^30423822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30423822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36408960).

30423822 is an abundant number, since it is smaller than the sum of its proper divisors (42394098).

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

30423822 is a wasteful number, since it uses less digits than its factorization.

30423822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 30423822 is about 5515.7793646954. The cubic root of 30423822 is about 312.1796508100.

The spelling of 30423822 in words is "thirty million, four hundred twenty-three thousand, eight hundred twenty-two".