20744038 has 8 divisors (see below), whose sum is σ = 35561232. Its totient is φ = 8890296.

The previous prime is 20744023. The next prime is 20744039. The reversal of 20744038 is 83044702.

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

It is a super-2 number, since 2×20744038² = 860630225090888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20743997 and 20744015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20744039) by changing a digit.

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, 740845 + ... + 740872.

It is an arithmetic number, because the mean of its divisors is an integer number (4445154).

Almost surely, 2^20744038 is an apocalyptic number.

20744038 is a deficient number, since it is larger than the sum of its proper divisors (14817194).

20744038 is a wasteful number, since it uses less digits than its factorization.

20744038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481726.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 20744038 is about 4554.5623280399. The cubic root of 20744038 is about 274.7669121342.

The spelling of 20744038 in words is "twenty million, seven hundred forty-four thousand, thirty-eight".