20751369 has 8 divisors (see below), whose sum is σ = 28561152. Its totient is φ = 13387920.

The previous prime is 20751361. The next prime is 20751391. The reversal of 20751369 is 96315702.

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

It is not a de Polignac number, because 20751369 - 2³ = 20751361 is a prime.

It is a super-2 number, since 2×20751369² = 861238630748322, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 111474 + ... + 111659.

It is an arithmetic number, because the mean of its divisors is an integer number (3570144).

Almost surely, 2^20751369 is an apocalyptic number.

It is an amenable number.

20751369 is a deficient number, since it is larger than the sum of its proper divisors (7809783).

20751369 is a wasteful number, since it uses less digits than its factorization.

20751369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223167.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 20751369 is about 4555.3670543657. The cubic root of 20751369 is about 274.7992761158.

The spelling of 20751369 in words is "twenty million, seven hundred fifty-one thousand, three hundred sixty-nine".