30272421 has 12 divisors (see below), whose sum is σ = 40885728. Its totient is φ = 19921824.

The previous prime is 30272419. The next prime is 30272447. The reversal of 30272421 is 12427203.

It is not a de Polignac number, because 30272421 - 2¹ = 30272419 is a prime.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30272471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96561 + ... + 96873.

It is an arithmetic number, because the mean of its divisors is an integer number (3407144).

Almost surely, 2^30272421 is an apocalyptic number.

It is an amenable number.

30272421 is a deficient number, since it is larger than the sum of its proper divisors (10613307).

30272421 is an equidigital number, since it uses as much as digits as its factorization.

30272421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 30272421 is about 5502.0378951803. The cubic root of 30272421 is about 311.6609461935.

Adding to 30272421 its reverse (12427203), we get a palindrome (42699624).

The spelling of 30272421 in words is "thirty million, two hundred seventy-two thousand, four hundred twenty-one".