30460021 has 4 divisors (see below), whose sum is σ = 32063200. Its totient is φ = 28856844.

The previous prime is 30460019. The next prime is 30460033. The reversal of 30460021 is 12006403.

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 30460021 - 2¹ = 30460019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30459977 and 30460004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30460051) 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, 801561 + ... + 801598.

It is an arithmetic number, because the mean of its divisors is an integer number (8015800).

Almost surely, 2^30460021 is an apocalyptic number.

It is an amenable number.

30460021 is a deficient number, since it is larger than the sum of its proper divisors (1603179).

30460021 is a wasteful number, since it uses less digits than its factorization.

30460021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603178.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 30460021 is about 5519.0597931169. The cubic root of 30460021 is about 312.3034147061.

Adding to 30460021 its reverse (12006403), we get a palindrome (42466424).

The spelling of 30460021 in words is "thirty million, four hundred sixty thousand, twenty-one".