20378356 has 12 divisors (see below), whose sum is σ = 35899360. Its totient is φ = 10121400.

The previous prime is 20378333. The next prime is 20378357. The reversal of 20378356 is 65387302.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20378357) 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, 16266 + ... + 17473.

Almost surely, 2^20378356 is an apocalyptic number.

It is an amenable number.

20378356 is a deficient number, since it is larger than the sum of its proper divisors (15521004).

20378356 is a wasteful number, since it uses less digits than its factorization.

20378356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33894 (or 33892 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 20378356 is about 4514.2392493088. The cubic root of 20378356 is about 273.1427735171.

The spelling of 20378356 in words is "twenty million, three hundred seventy-eight thousand, three hundred fifty-six".