30875949 has 24 divisors (see below), whose sum is σ = 48353760. Its totient is φ = 18872352.

The previous prime is 30875941. The next prime is 30875951. The reversal of 30875949 is 94957803.

It is not a de Polignac number, because 30875949 - 2³ = 30875941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30875941) 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 23 ways as a sum of consecutive naturals, for example, 18262 + ... + 19880.

It is an arithmetic number, because the mean of its divisors is an integer number (2014740).

Almost surely, 2^30875949 is an apocalyptic number.

30875949 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

30875949 is a deficient number, since it is larger than the sum of its proper divisors (17477811).

30875949 is a wasteful number, since it uses less digits than its factorization.

30875949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801 (or 1798 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 30875949 is about 5556.6130871242. The cubic root of 30875949 is about 313.7184820432.

The spelling of 30875949 in words is "thirty million, eight hundred seventy-five thousand, nine hundred forty-nine".