30672729 has 16 divisors (see below), whose sum is σ = 45589440. Its totient is φ = 20381760.

The previous prime is 30672701. The next prime is 30672737. The reversal of 30672729 is 92727603.

It is not a de Polignac number, because 30672729 - 2⁹ = 30672217 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 30672693 and 30672702.

It is not an unprimeable number, because it can be changed into a prime (30672769) 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, 7414 + ... + 10784.

It is an arithmetic number, because the mean of its divisors is an integer number (2849340).

Almost surely, 2^30672729 is an apocalyptic number.

It is an amenable number.

30672729 is a deficient number, since it is larger than the sum of its proper divisors (14916711).

30672729 is a wasteful number, since it uses less digits than its factorization.

30672729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3717 (or 3711 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 30672729 is about 5538.2965792742. The cubic root of 30672729 is about 313.0286867181.

The spelling of 30672729 in words is "thirty million, six hundred seventy-two thousand, seven hundred twenty-nine".