20262606 has 128 divisors (see below), whose sum is σ = 55157760. Its totient is φ = 4810752.

The previous prime is 20262601. The next prime is 20262637. The reversal of 20262606 is 60626202.

20262606 = T₁₀₂₈ + T₁₀₂₉ + ... + T₁₀₆₄.

20262606 = 186² + 187² + ... + 406².

It is a super-2 number, since 2×20262606² = 821146403822472, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20262601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 343405 + ... + 343463.

It is an arithmetic number, because the mean of its divisors is an integer number (430920).

Almost surely, 2^20262606 is an apocalyptic number.

20262606 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20262606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27578880).

20262606 is an abundant number, since it is smaller than the sum of its proper divisors (34895154).

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

20262606 is a wasteful number, since it uses less digits than its factorization.

20262606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20262606 is about 4501.4004487493. The cubic root of 20262606 is about 272.6246367534.

Adding to 20262606 its reverse (60626202), we get a palindrome (80888808).

The spelling of 20262606 in words is "twenty million, two hundred sixty-two thousand, six hundred six".