30422790 has 120 divisors (see below), whose sum is σ = 86719248. Its totient is φ = 7650720.

The previous prime is 30422761. The next prime is 30422797. The reversal of 30422790 is 9722403.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30422797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 428455 + ... + 428525.

Almost surely, 2^30422790 is an apocalyptic number.

30422790 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30422790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43359624).

30422790 is an abundant number, since it is smaller than the sum of its proper divisors (56296458).

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

30422790 is a wasteful number, since it uses less digits than its factorization.

30422790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 30422790 is about 5515.6858141123. The cubic root of 30422790 is about 312.1761209769.

It can be divided in two parts, 3042 and 2790, that added together give a cube (5832 = 18³).

The spelling of 30422790 in words is "thirty million, four hundred twenty-two thousand, seven hundred ninety".