20835938 has 4 divisors (see below), whose sum is σ = 31253910. Its totient is φ = 10417968.

The previous prime is 20835929. The next prime is 20835959. The reversal of 20835938 is 83953802.

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

It can be written as a sum of positive squares in only one way, i.e., 18037009 + 2798929 = 4247^2 + 1673^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5208983 + ... + 5208986.

Almost surely, 2^20835938 is an apocalyptic number.

20835938 is a deficient number, since it is larger than the sum of its proper divisors (10417972).

20835938 is a wasteful number, since it uses less digits than its factorization.

20835938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10417971.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 20835938 is about 4564.6399638964. The cubic root of 20835938 is about 275.1720708231.

The spelling of 20835938 in words is "twenty million, eight hundred thirty-five thousand, nine hundred thirty-eight".