30422240 has 48 divisors (see below), whose sum is σ = 72585072. Its totient is φ = 12048384.

The previous prime is 30422237. The next prime is 30422243. The reversal of 30422240 is 4222403.

It is an interprime number because it is at equal distance from previous prime (30422237) and next prime (30422243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30422243) 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, 16232 + ... + 18008.

It is an arithmetic number, because the mean of its divisors is an integer number (1512189).

Almost surely, 2^30422240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30422240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36292536).

30422240 is an abundant number, since it is smaller than the sum of its proper divisors (42162832).

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

30422240 is a wasteful number, since it uses less digits than its factorization.

30422240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899 (or 1891 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 30422240 is about 5515.6359560798. The cubic root of 30422240 is about 312.1742397348.

Adding to 30422240 its reverse (4222403), we get a palindrome (34644643).

The spelling of 30422240 in words is "thirty million, four hundred twenty-two thousand, two hundred forty".