20727338 has 4 divisors (see below), whose sum is σ = 31091010. Its totient is φ = 10363668.

The previous prime is 20727323. The next prime is 20727353. The reversal of 20727338 is 83372702.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (20727323) and next prime (20727353).

It can be written as a sum of positive squares in only one way, i.e., 16834609 + 3892729 = 4103^2 + 1973^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5181833 + ... + 5181836.

Almost surely, 2^20727338 is an apocalyptic number.

20727338 is a deficient number, since it is larger than the sum of its proper divisors (10363672).

20727338 is a wasteful number, since it uses less digits than its factorization.

20727338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10363671.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 20727338 is about 4552.7286323698. The cubic root of 20727338 is about 274.6931585841.

The spelling of 20727338 in words is "twenty million, seven hundred twenty-seven thousand, three hundred thirty-eight".