20300929 has 4 divisors (see below), whose sum is σ = 22146480. Its totient is φ = 18455380.

The previous prime is 20300879. The next prime is 20300947. The reversal of 20300929 is 92900302.

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.

It is a cyclic number.

It is not a de Polignac number, because 20300929 - 2⁷ = 20300801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20300999) 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, 922759 + ... + 922780.

It is an arithmetic number, because the mean of its divisors is an integer number (5536620).

Almost surely, 2^20300929 is an apocalyptic number.

It is an amenable number.

20300929 is a deficient number, since it is larger than the sum of its proper divisors (1845551).

20300929 is a wasteful number, since it uses less digits than its factorization.

20300929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845550.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 20300929 is about 4505.6552242709. The cubic root of 20300929 is about 272.7964016648.

The spelling of 20300929 in words is "twenty million, three hundred thousand, nine hundred twenty-nine".