30725134 has 16 divisors (see below), whose sum is σ = 51448320. Its totient is φ = 13640760.

The previous prime is 30725111. The next prime is 30725153. The reversal of 30725134 is 43152703.

It is a junction number, because it is equal to n+sod(n) for n = 30725099 and 30725108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15294 + ... + 17185.

It is an arithmetic number, because the mean of its divisors is an integer number (3215520).

Almost surely, 2^30725134 is an apocalyptic number.

30725134 is a deficient number, since it is larger than the sum of its proper divisors (20723186).

30725134 is a wasteful number, since it uses less digits than its factorization.

30725134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32535.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 30725134 is about 5543.0257080407. The cubic root of 30725134 is about 313.2068573099.

Adding to 30725134 its reverse (43152703), we get a palindrome (73877837).

The spelling of 30725134 in words is "thirty million, seven hundred twenty-five thousand, one hundred thirty-four".