30649133 has 4 divisors (see below), whose sum is σ = 31981728. Its totient is φ = 29316540.

The previous prime is 30649127. The next prime is 30649163. The reversal of 30649133 is 33194603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33194603 = 13 ⋅2553431.

It is a cyclic number.

It is not a de Polignac number, because 30649133 - 2⁴ = 30649117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30649096 and 30649105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30649163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666263 + ... + 666308.

It is an arithmetic number, because the mean of its divisors is an integer number (7995432).

Almost surely, 2^30649133 is an apocalyptic number.

It is an amenable number.

30649133 is a deficient number, since it is larger than the sum of its proper divisors (1332595).

30649133 is a wasteful number, since it uses less digits than its factorization.

30649133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332594.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 30649133 is about 5536.1659115312. The cubic root of 30649133 is about 312.9483969409.

The spelling of 30649133 in words is "thirty million, six hundred forty-nine thousand, one hundred thirty-three".