20229934 has 4 divisors (see below), whose sum is σ = 30344904. Its totient is φ = 10114966.

The previous prime is 20229931. The next prime is 20229961. The reversal of 20229934 is 43992202.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 20229896 and 20229905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20229931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5057482 + ... + 5057485.

It is an arithmetic number, because the mean of its divisors is an integer number (7586226).

Almost surely, 2^20229934 is an apocalyptic number.

20229934 is a deficient number, since it is larger than the sum of its proper divisors (10114970).

20229934 is a wasteful number, since it uses less digits than its factorization.

20229934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10114969.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 20229934 is about 4497.7698918464. The cubic root of 20229934 is about 272.4780286973.

The spelling of 20229934 in words is "twenty million, two hundred twenty-nine thousand, nine hundred thirty-four".