20026765 has 16 divisors (see below), whose sum is σ = 27760320. Its totient is φ = 13707520.

The previous prime is 20026759. The next prime is 20026801. The reversal of 20026765 is 56762002.

It is not a de Polignac number, because 20026765 - 2¹⁵ = 19993997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9775 + ... + 11644.

It is an arithmetic number, because the mean of its divisors is an integer number (1735020).

Almost surely, 2^20026765 is an apocalyptic number.

It is an amenable number.

20026765 is a deficient number, since it is larger than the sum of its proper divisors (7733555).

20026765 is a wasteful number, since it uses less digits than its factorization.

20026765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21452.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20026765 is about 4475.1273724890. The cubic root of 20026765 is about 271.5627933312.

Adding to 20026765 its reverse (56762002), we get a palindrome (76788767).

The spelling of 20026765 in words is "twenty million, twenty-six thousand, seven hundred sixty-five".