30123629 has 4 divisors (see below), whose sum is σ = 31433376. Its totient is φ = 28813884.

The previous prime is 30123619. The next prime is 30123631. The reversal of 30123629 is 92632103.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92632103 = 229 ⋅404507.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30123629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30123598 and 30123607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123619) 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, 654839 + ... + 654884.

It is an arithmetic number, because the mean of its divisors is an integer number (7858344).

Almost surely, 2^30123629 is an apocalyptic number.

It is an amenable number.

30123629 is a deficient number, since it is larger than the sum of its proper divisors (1309747).

30123629 is a wasteful number, since it uses less digits than its factorization.

30123629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309746.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 30123629 is about 5488.4997039264. The cubic root of 30123629 is about 311.1494923406.

The spelling of 30123629 in words is "thirty million, one hundred twenty-three thousand, six hundred twenty-nine".