30634420 has 12 divisors (see below), whose sum is σ = 64332324. Its totient is φ = 12253760.

The previous prime is 30634397. The next prime is 30634453. The reversal of 30634420 is 2443603.

It can be written as a sum of positive squares in 2 ways, for example, as 6290064 + 24344356 = 2508^2 + 4934^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30634391 and 30634400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765841 + ... + 765880.

It is an arithmetic number, because the mean of its divisors is an integer number (5361027).

Almost surely, 2^30634420 is an apocalyptic number.

It is an amenable number.

30634420 is an abundant number, since it is smaller than the sum of its proper divisors (33697904).

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

30634420 is a wasteful number, since it uses less digits than its factorization.

30634420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531730 (or 1531728 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 30634420 is about 5534.8369443011. The cubic root of 30634420 is about 312.8983123622.

The spelling of 30634420 in words is "thirty million, six hundred thirty-four thousand, four hundred twenty".