30749853 has 4 divisors (see below), whose sum is σ = 40999808. Its totient is φ = 20499900.

The previous prime is 30749837. The next prime is 30749867. The reversal of 30749853 is 35894703.

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.

It is not a de Polignac number, because 30749853 - 2⁴ = 30749837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30749813) 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, 5124973 + ... + 5124978.

It is an arithmetic number, because the mean of its divisors is an integer number (10249952).

Almost surely, 2^30749853 is an apocalyptic number.

It is an amenable number.

30749853 is a deficient number, since it is larger than the sum of its proper divisors (10249955).

30749853 is a wasteful number, since it uses less digits than its factorization.

30749853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10249954.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 30749853 is about 5545.2549986452. The cubic root of 30749853 is about 313.2908285737.

The spelling of 30749853 in words is "thirty million, seven hundred forty-nine thousand, eight hundred fifty-three".