20526680 has 16 divisors (see below), whose sum is σ = 46185120. Its totient is φ = 8210656.

The previous prime is 20526679. The next prime is 20526689. The reversal of 20526680 is 8662502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20526689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256544 + ... + 256623.

It is an arithmetic number, because the mean of its divisors is an integer number (2886570).

Almost surely, 2^20526680 is an apocalyptic number.

20526680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20526680 is an abundant number, since it is smaller than the sum of its proper divisors (25658440).

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

20526680 is a wasteful number, since it uses less digits than its factorization.

20526680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513178 (or 513174 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 20526680 is about 4530.6379241780. The cubic root of 20526680 is about 273.8038626873.

The spelling of 20526680 in words is "twenty million, five hundred twenty-six thousand, six hundred eighty".