20380738 has 8 divisors (see below), whose sum is σ = 34938432. Its totient is φ = 8734596.

The previous prime is 20380721. The next prime is 20380769. The reversal of 20380738 is 83708302.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727870 + ... + 727897.

It is an arithmetic number, because the mean of its divisors is an integer number (4367304).

Almost surely, 2^20380738 is an apocalyptic number.

20380738 is a deficient number, since it is larger than the sum of its proper divisors (14557694).

20380738 is a wasteful number, since it uses less digits than its factorization.

20380738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455776.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20380738 is about 4514.5030734290. The cubic root of 20380738 is about 273.1534155391.

The spelling of 20380738 in words is "twenty million, three hundred eighty thousand, seven hundred thirty-eight".