20703381 has 16 divisors (see below), whose sum is σ = 29736960. Its totient is φ = 12774960.

The previous prime is 20703379. The next prime is 20703383. The reversal of 20703381 is 18330702.

It is an interprime number because it is at equal distance from previous prime (20703379) and next prime (20703383).

It is not a de Polignac number, because 20703381 - 2¹ = 20703379 is a prime.

It is a super-2 number, since 2×20703381² = 857259969662322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20703383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2701 + ... + 6978.

It is an arithmetic number, because the mean of its divisors is an integer number (1858560).

Almost surely, 2^20703381 is an apocalyptic number.

It is an amenable number.

20703381 is a deficient number, since it is larger than the sum of its proper divisors (9033579).

20703381 is a wasteful number, since it uses less digits than its factorization.

20703381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9736.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 20703381 is about 4550.0968121569. The cubic root of 20703381 is about 274.5872861523.

The spelling of 20703381 in words is "twenty million, seven hundred three thousand, three hundred eighty-one".