20738331 has 12 divisors (see below), whose sum is σ = 30092608. Its totient is φ = 13762224.

The previous prime is 20738321. The next prime is 20738359. The reversal of 20738331 is 13383702.

It is not a de Polignac number, because 20738331 - 2⁵ = 20738299 is a prime.

It is a super-2 number, since 2×20738331² = 860156745331122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20738295 and 20738304.

It is not an unprimeable number, because it can be changed into a prime (20738321) 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 11 ways as a sum of consecutive naturals, for example, 3160 + ... + 7173.

Almost surely, 2^20738331 is an apocalyptic number.

20738331 is a deficient number, since it is larger than the sum of its proper divisors (9354277).

20738331 is a wasteful number, since it uses less digits than its factorization.

20738331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10562 (or 10559 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20738331 is about 4553.9357702980. The cubic root of 20738331 is about 274.7417123059.

It can be divided in two parts, 2073 and 8331, that added together give a square (10404 = 102²).

The spelling of 20738331 in words is "twenty million, seven hundred thirty-eight thousand, three hundred thirty-one".