26900020 has 36 divisors (see below), whose sum is σ = 65715300. Its totient is φ = 9222528.

The previous prime is 26900017. The next prime is 26900063. The reversal of 26900020 is 2000962.

It can be written as a sum of positive squares in 2 ways, for example, as 15038884 + 11861136 = 3878^2 + 3444^2 .

It is a super-2 number, since 2×26900020² = 1447222152000800, which contains 22 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 12745 + ... + 14704.

It is an arithmetic number, because the mean of its divisors is an integer number (1825425).

Almost surely, 2^26900020 is an apocalyptic number.

26900020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26900020 is an abundant number, since it is smaller than the sum of its proper divisors (38815280).

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

26900020 is a wasteful number, since it uses less digits than its factorization.

26900020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27472 (or 27463 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 26900020 is about 5186.5229200303. The cubic root of 26900020 is about 299.6292456966.

Adding to 26900020 its reverse (2000962), we get a palindrome (28900982).

The spelling of 26900020 in words is "twenty-six million, nine hundred thousand, twenty".