30108420 has 36 divisors (see below), whose sum is σ = 91329420. Its totient is φ = 8028864.

The previous prime is 30108413. The next prime is 30108431. The reversal of 30108420 is 2480103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14379264 + 15729156 = 3792^2 + 3966^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30108393 and 30108402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83455 + ... + 83814.

Almost surely, 2^30108420 is an apocalyptic number.

30108420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30108420 is an abundant number, since it is smaller than the sum of its proper divisors (61221000).

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

30108420 is a wasteful number, since it uses less digits than its factorization.

30108420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167284 (or 167279 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 30108420 is about 5487.1139955354. The cubic root of 30108420 is about 311.0971185128.

Adding to 30108420 its reverse (2480103), we get a palindrome (32588523).

The spelling of 30108420 in words is "thirty million, one hundred eight thousand, four hundred twenty".