20693958 has 8 divisors (see below), whose sum is σ = 41387928. Its totient is φ = 6897984.

The previous prime is 20693941. The next prime is 20693993. The reversal of 20693958 is 85939602.

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

20693958 is an admirable number.

It is a Curzon number.

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, 1724491 + ... + 1724502.

It is an arithmetic number, because the mean of its divisors is an integer number (5173491).

Almost surely, 2^20693958 is an apocalyptic number.

20693958 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20693958 is a wasteful number, since it uses less digits than its factorization.

20693958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448998.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 20693958 is about 4549.0612218347. The cubic root of 20693958 is about 274.5456209987.

The spelling of 20693958 in words is "twenty million, six hundred ninety-three thousand, nine hundred fifty-eight".