20235764 has 12 divisors (see below), whose sum is σ = 35469924. Its totient is φ = 10101504.

The previous prime is 20235739. The next prime is 20235769. The reversal of 20235764 is 46753202.

It can be written as a sum of positive squares in 2 ways, for example, as 13630864 + 6604900 = 3692^2 + 2570^2 .

It is a super-2 number, since 2×20235764² = 818972289327392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20235769) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1067 + ... + 6450.

It is an arithmetic number, because the mean of its divisors is an integer number (2955827).

Almost surely, 2^20235764 is an apocalyptic number.

It is an amenable number.

20235764 is a deficient number, since it is larger than the sum of its proper divisors (15234160).

20235764 is a wasteful number, since it uses less digits than its factorization.

20235764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8194 (or 8192 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 20235764 is about 4498.4179441221. The cubic root of 20235764 is about 272.5042010406.

Adding to 20235764 its reverse (46753202), we get a palindrome (66988966).

The spelling of 20235764 in words is "twenty million, two hundred thirty-five thousand, seven hundred sixty-four".