20101026 has 16 divisors (see below), whose sum is σ = 43856928. Its totient is φ = 6091200.

The previous prime is 20101013. The next prime is 20101073. The reversal of 20101026 is 62010102.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 152215 + ... + 152346.

It is an arithmetic number, because the mean of its divisors is an integer number (2741058).

Almost surely, 2^20101026 is an apocalyptic number.

20101026 is an abundant number, since it is smaller than the sum of its proper divisors (23755902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101026 is a wasteful number, since it uses less digits than its factorization.

20101026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304577.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 20101026 is about 4483.4167774143. The cubic root of 20101026 is about 271.8980388456.

Adding to 20101026 its reverse (62010102), we get a palindrome (82111128).

The spelling of 20101026 in words is "twenty million, one hundred one thousand, twenty-six".