20950438 has 8 divisors (see below), whose sum is σ = 32094432. Its totient is φ = 10252296.

The previous prime is 20950427. The next prime is 20950439. The reversal of 20950438 is 83405902.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20950439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111345 + ... + 111532.

It is an arithmetic number, because the mean of its divisors is an integer number (4011804).

Almost surely, 2^20950438 is an apocalyptic number.

20950438 is a deficient number, since it is larger than the sum of its proper divisors (11143994).

20950438 is a wasteful number, since it uses less digits than its factorization.

20950438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222926.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 20950438 is about 4577.1648430005. The cubic root of 20950438 is about 275.6752025386.

The spelling of 20950438 in words is "twenty million, nine hundred fifty thousand, four hundred thirty-eight".