30347421 has 16 divisors (see below), whose sum is σ = 44640960. Its totient is φ = 18218880.

The previous prime is 30347399. The next prime is 30347423. The reversal of 30347421 is 12474303.

It is not a de Polignac number, because 30347421 - 2¹⁵ = 30314653 is a prime.

It is a super-2 number, since 2×30347421² = 1841931922702482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30347391 and 30347400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30347423) 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 15 ways as a sum of consecutive naturals, for example, 7891 + ... + 11088.

It is an arithmetic number, because the mean of its divisors is an integer number (2790060).

Almost surely, 2^30347421 is an apocalyptic number.

It is an amenable number.

30347421 is a deficient number, since it is larger than the sum of its proper divisors (14293539).

30347421 is a wasteful number, since it uses less digits than its factorization.

30347421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19036.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 30347421 is about 5508.8493353876. The cubic root of 30347421 is about 311.9181141943.

The spelling of 30347421 in words is "thirty million, three hundred forty-seven thousand, four hundred twenty-one".