20895838 has 4 divisors (see below), whose sum is σ = 31343760. Its totient is φ = 10447918.

The previous prime is 20895827. The next prime is 20895841. The reversal of 20895838 is 83859802.

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

It is a junction number, because it is equal to n+sod(n) for n = 20895794 and 20895803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5223958 + ... + 5223961.

It is an arithmetic number, because the mean of its divisors is an integer number (7835940).

Almost surely, 2^20895838 is an apocalyptic number.

20895838 is a deficient number, since it is larger than the sum of its proper divisors (10447922).

20895838 is a wasteful number, since it uses less digits than its factorization.

20895838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10447921.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 20895838 is about 4571.1965610768. The cubic root of 20895838 is about 275.4355104800.

The spelling of 20895838 in words is "twenty million, eight hundred ninety-five thousand, eight hundred thirty-eight".