20529838 has 8 divisors (see below), whose sum is σ = 35194032. Its totient is φ = 8798496.

The previous prime is 20529799. The next prime is 20529851. The reversal of 20529838 is 83892502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20529797 and 20529806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733195 + ... + 733222.

It is an arithmetic number, because the mean of its divisors is an integer number (4399254).

Almost surely, 2^20529838 is an apocalyptic number.

20529838 is a deficient number, since it is larger than the sum of its proper divisors (14664194).

20529838 is a wasteful number, since it uses less digits than its factorization.

20529838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466426.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 20529838 is about 4530.9864268170. The cubic root of 20529838 is about 273.8179034099.

The spelling of 20529838 in words is "twenty million, five hundred twenty-nine thousand, eight hundred thirty-eight".