20629934 has 16 divisors (see below), whose sum is σ = 35080080. Its totient is φ = 9020160.

The previous prime is 20629913. The next prime is 20629943. The reversal of 20629934 is 43992602.

It is a Smith number, since the sum of its digits (35) 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 = 20629894 and 20629903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20387 + ... + 21374.

It is an arithmetic number, because the mean of its divisors is an integer number (2192505).

Almost surely, 2^20629934 is an apocalyptic number.

20629934 is a deficient number, since it is larger than the sum of its proper divisors (14450146).

20629934 is a wasteful number, since it uses less digits than its factorization.

20629934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41795.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 20629934 is about 4542.0187141843. The cubic root of 20629934 is about 274.2621941896.

The spelling of 20629934 in words is "twenty million, six hundred twenty-nine thousand, nine hundred thirty-four".