30103749 has 12 divisors (see below), whose sum is σ = 46828236. Its totient is φ = 18525312.

The previous prime is 30103727. The next prime is 30103751. The reversal of 30103749 is 94730103.

It can be written as a sum of positive squares in 2 ways, for example, as 6890625 + 23213124 = 2625^2 + 4818^2 .

It is not a de Polignac number, because 30103749 - 2²¹ = 28006597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30103349) 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 11 ways as a sum of consecutive naturals, for example, 128532 + ... + 128765.

It is an arithmetic number, because the mean of its divisors is an integer number (3902353).

Almost surely, 2^30103749 is an apocalyptic number.

30103749 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

30103749 is a deficient number, since it is larger than the sum of its proper divisors (16724487).

30103749 is a wasteful number, since it uses less digits than its factorization.

30103749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257316 (or 257313 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 30103749 is about 5486.6883454412. The cubic root of 30103749 is about 311.0810298816.

The spelling of 30103749 in words is "thirty million, one hundred three thousand, seven hundred forty-nine".