20693854 has 4 divisors (see below), whose sum is σ = 31040784. Its totient is φ = 10346926.

The previous prime is 20693843. The next prime is 20693857. The reversal of 20693854 is 45839602.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20693857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5173462 + ... + 5173465.

It is an arithmetic number, because the mean of its divisors is an integer number (7760196).

Almost surely, 2^20693854 is an apocalyptic number.

20693854 is a deficient number, since it is larger than the sum of its proper divisors (10346930).

20693854 is a wasteful number, since it uses less digits than its factorization.

20693854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10346929.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 20693854 is about 4549.0497908904. The cubic root of 20693854 is about 274.5451610772.

The spelling of 20693854 in words is "twenty million, six hundred ninety-three thousand, eight hundred fifty-four".