20763238 has 32 divisors (see below), whose sum is σ = 34151040. Its totient is φ = 9434880.

The previous prime is 20763229. The next prime is 20763247. The reversal of 20763238 is 83236702.

It is an interprime number because it is at equal distance from previous prime (20763229) and next prime (20763247).

It is a super-2 number, since 2×20763238² = 862224104489288, which contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 158433 + ... + 158563.

It is an arithmetic number, because the mean of its divisors is an integer number (1067220).

Almost surely, 2^20763238 is an apocalyptic number.

20763238 is a deficient number, since it is larger than the sum of its proper divisors (13387802).

20763238 is a wasteful number, since it uses less digits than its factorization.

20763238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 20763238 is about 4556.6696171656. The cubic root of 20763238 is about 274.8516577357.

The spelling of 20763238 in words is "twenty million, seven hundred sixty-three thousand, two hundred thirty-eight".