30423629 has 4 divisors (see below), whose sum is σ = 30435900. Its totient is φ = 30411360.

The previous prime is 30423619. The next prime is 30423683. The reversal of 30423629 is 92632403.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92632403 = 127 ⋅729389.

It can be written as a sum of positive squares in 2 ways, for example, as 6901129 + 23522500 = 2627^2 + 4850^2 .

It is a cyclic number.

It is not a de Polignac number, because 30423629 - 2²⁰ = 29375053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30423619) 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, 962 + ... + 7859.

It is an arithmetic number, because the mean of its divisors is an integer number (7608975).

Almost surely, 2^30423629 is an apocalyptic number.

It is an amenable number.

30423629 is a deficient number, since it is larger than the sum of its proper divisors (12271).

30423629 is an equidigital number, since it uses as much as digits as its factorization.

30423629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12270.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 30423629 is about 5515.7618694066. The cubic root of 30423629 is about 312.1789906826.

The spelling of 30423629 in words is "thirty million, four hundred twenty-three thousand, six hundred twenty-nine".