30725432 has 24 divisors (see below), whose sum is σ = 60807600. Its totient is φ = 14552784.

The previous prime is 30725423. The next prime is 30725437. The reversal of 30725432 is 23452703.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30725437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2432 + ... + 8207.

It is an arithmetic number, because the mean of its divisors is an integer number (2533650).

Almost surely, 2^30725432 is an apocalyptic number.

It is an amenable number.

30725432 is a deficient number, since it is larger than the sum of its proper divisors (30082168).

30725432 is a wasteful number, since it uses less digits than its factorization.

30725432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10683 (or 10660 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 30725432 is about 5543.0525886013. The cubic root of 30725432 is about 313.2078698940.

The spelling of 30725432 in words is "thirty million, seven hundred twenty-five thousand, four hundred thirty-two".