30643461 has 16 divisors (see below), whose sum is σ = 45601920. Its totient is φ = 20337120.

The previous prime is 30643433. The next prime is 30643463. The reversal of 30643461 is 16434603.

It is a de Polignac number, because none of the positive numbers 2^k-30643461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30643463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3856 + ... + 8726.

It is an arithmetic number, because the mean of its divisors is an integer number (2850120).

Almost surely, 2^30643461 is an apocalyptic number.

It is an amenable number.

30643461 is a deficient number, since it is larger than the sum of its proper divisors (14958459).

30643461 is a wasteful number, since it uses less digits than its factorization.

30643461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5113 (or 5107 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 30643461 is about 5535.6536199441. The cubic root of 30643461 is about 312.9290907632.

The spelling of 30643461 in words is "thirty million, six hundred forty-three thousand, four hundred sixty-one".