20526900 has 72 divisors (see below), whose sum is σ = 60558624. Its totient is φ = 5366400.

The previous prime is 20526893. The next prime is 20526907. The reversal of 20526900 is 962502.

It is an interprime number because it is at equal distance from previous prime (20526893) and next prime (20526907).

It is a super-2 number, since 2×20526900² = 842707247220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20526907) 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 23 ways as a sum of consecutive naturals, for example, 15255 + ... + 16545.

It is an arithmetic number, because the mean of its divisors is an integer number (841092).

Almost surely, 2^20526900 is an apocalyptic number.

20526900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20526900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30279312).

20526900 is an abundant number, since it is smaller than the sum of its proper divisors (40031724).

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

20526900 is a wasteful number, since it uses less digits than its factorization.

20526900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361 (or 1354 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 20526900 is about 4530.6622032546. The cubic root of 20526900 is about 273.8048408717.

The spelling of 20526900 in words is "twenty million, five hundred twenty-six thousand, nine hundred".