30638741 has 4 divisors (see below), whose sum is σ = 35015712. Its totient is φ = 26261772.

The previous prime is 30638731. The next prime is 30638749. The reversal of 30638741 is 14783603.

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 a cyclic number.

It is not a de Polignac number, because 30638741 - 2²² = 26444437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30638698 and 30638707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30638749) 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, 2188475 + ... + 2188488.

It is an arithmetic number, because the mean of its divisors is an integer number (8753928).

Almost surely, 2^30638741 is an apocalyptic number.

It is an amenable number.

30638741 is a deficient number, since it is larger than the sum of its proper divisors (4376971).

30638741 is an equidigital number, since it uses as much as digits as its factorization.

30638741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376970.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 30638741 is about 5535.2272762733. The cubic root of 30638741 is about 312.9130231575.

The spelling of 30638741 in words is "thirty million, six hundred thirty-eight thousand, seven hundred forty-one".