20262723 has 16 divisors (see below), whose sum is σ = 29331456. Its totient is φ = 12368160.

The previous prime is 20262713. The next prime is 20262727. The reversal of 20262723 is 32726202.

It is not a de Polignac number, because 20262723 - 2¹⁴ = 20246339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20262693 and 20262702.

It is not an unprimeable number, because it can be changed into a prime (20262727) 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 15 ways as a sum of consecutive naturals, for example, 2908 + ... + 6998.

It is an arithmetic number, because the mean of its divisors is an integer number (1833216).

Almost surely, 2^20262723 is an apocalyptic number.

20262723 is a deficient number, since it is larger than the sum of its proper divisors (9068733).

20262723 is a wasteful number, since it uses less digits than its factorization.

20262723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 20262723 is about 4501.4134446860. The cubic root of 20262723 is about 272.6251614806.

Adding to 20262723 its reverse (32726202), we get a palindrome (52988925).

The spelling of 20262723 in words is "twenty million, two hundred sixty-two thousand, seven hundred twenty-three".