20231026 has 4 divisors (see below), whose sum is σ = 30346542. Its totient is φ = 10115512.

The previous prime is 20231023. The next prime is 20231039. The reversal of 20231026 is 62013202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62013202 = 2 ⋅31006601.

It can be written as a sum of positive squares in only one way, i.e., 16008001 + 4223025 = 4001^2 + 2055^2 .

It is not an unprimeable number, because it can be changed into a prime (20231023) 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 as a sum of consecutive naturals, namely, 5057755 + ... + 5057758.

Almost surely, 2^20231026 is an apocalyptic number.

20231026 is a deficient number, since it is larger than the sum of its proper divisors (10115516).

20231026 is a wasteful number, since it uses less digits than its factorization.

20231026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10115515.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20231026 is about 4497.8912837017. The cubic root of 20231026 is about 272.4829313440.

Adding to 20231026 its reverse (62013202), we get a palindrome (82244228).

The spelling of 20231026 in words is "twenty million, two hundred thirty-one thousand, twenty-six".