20100026 has 4 divisors (see below), whose sum is σ = 30150042. Its totient is φ = 10050012.

The previous prime is 20100023. The next prime is 20100053. The reversal of 20100026 is 62000102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16394401 + 3705625 = 4049^2 + 1925^2 .

It is a super-2 number, since 2×20100026² = 808022090401352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20100023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025005 + ... + 5025008.

Almost surely, 2^20100026 is an apocalyptic number.

20100026 is a deficient number, since it is larger than the sum of its proper divisors (10050016).

20100026 is a wasteful number, since it uses less digits than its factorization.

20100026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050015.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20100026 is about 4483.3052539393. The cubic root of 20100026 is about 271.8935299125.

Adding to 20100026 its reverse (62000102), we get a palindrome (82100128).

The spelling of 20100026 in words is "twenty million, one hundred thousand, twenty-six".