30220623 has 6 divisors (see below), whose sum is σ = 43652024. Its totient is φ = 20147076.

The previous prime is 30220591. The next prime is 30220633. The reversal of 30220623 is 32602203.

It is not a de Polignac number, because 30220623 - 2⁵ = 30220591 is a prime.

It is a super-3 number, since 3×30220623³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30220596 and 30220605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30220633) 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 5 ways as a sum of consecutive naturals, for example, 1678915 + ... + 1678932.

Almost surely, 2^30220623 is an apocalyptic number.

30220623 is a deficient number, since it is larger than the sum of its proper divisors (13431401).

30220623 is a wasteful number, since it uses less digits than its factorization.

30220623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3357853 (or 3357850 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 30220623 is about 5497.3287149306. The cubic root of 30220623 is about 311.4830876082.

Adding to 30220623 its reverse (32602203), we get a palindrome (62822826).

The spelling of 30220623 in words is "thirty million, two hundred twenty thousand, six hundred twenty-three".