20751368 has 16 divisors (see below), whose sum is σ = 42446160. Its totient is φ = 9432400.

The previous prime is 20751361. The next prime is 20751391. The reversal of 20751368 is 86315702.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20751361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117818 + ... + 117993.

It is an arithmetic number, because the mean of its divisors is an integer number (2652885).

Almost surely, 2^20751368 is an apocalyptic number.

It is an amenable number.

20751368 is an abundant number, since it is smaller than the sum of its proper divisors (21694792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20751368 is a wasteful number, since it uses less digits than its factorization.

20751368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235828 (or 235824 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 20751368 is about 4555.3669446050. The cubic root of 20751368 is about 274.7992717016.

It can be divided in two parts, 2075 and 1368, that added together give a palindrome (3443).

The spelling of 20751368 in words is "twenty million, seven hundred fifty-one thousand, three hundred sixty-eight".