30478422 has 32 divisors (see below), whose sum is σ = 65882880. Its totient is φ = 9344160.

The previous prime is 30478387. The next prime is 30478429. The reversal of 30478422 is 22487403.

It is a super-2 number, since 2×30478422² = 1857868415220168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30478422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30478429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29047 + ... + 30077.

It is an arithmetic number, because the mean of its divisors is an integer number (2058840).

Almost surely, 2^30478422 is an apocalyptic number.

30478422 is an abundant number, since it is smaller than the sum of its proper divisors (35404458).

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

30478422 is a wasteful number, since it uses less digits than its factorization.

30478422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 30478422 is about 5520.7265826157. The cubic root of 30478422 is about 312.3662898906.

The spelling of 30478422 in words is "thirty million, four hundred seventy-eight thousand, four hundred twenty-two".