20769838 has 8 divisors (see below), whose sum is σ = 31232160. Its totient is φ = 10359120.

The previous prime is 20769823. The next prime is 20769857. The reversal of 20769838 is 83896702.

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 = 20769794 and 20769803.

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, 11878 + ... + 13513.

It is an arithmetic number, because the mean of its divisors is an integer number (3904020).

Almost surely, 2^20769838 is an apocalyptic number.

20769838 is a deficient number, since it is larger than the sum of its proper divisors (10462322).

20769838 is a wasteful number, since it uses less digits than its factorization.

20769838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25802.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 20769838 is about 4557.3937727609. The cubic root of 20769838 is about 274.8807769699.

The spelling of 20769838 in words is "twenty million, seven hundred sixty-nine thousand, eight hundred thirty-eight".