20896700 has 72 divisors (see below), whose sum is σ = 50194704. Its totient is φ = 7550400.

The previous prime is 20896693. The next prime is 20896721. The reversal of 20896700 is 769802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133022 + ... + 133178.

Almost surely, 2^20896700 is an apocalyptic number.

20896700 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 20896700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25097352).

20896700 is an abundant number, since it is smaller than the sum of its proper divisors (29298004).

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

20896700 is a wasteful number, since it uses less digits than its factorization.

20896700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 20896700 is about 4571.2908461396. The cubic root of 20896700 is about 275.4392978713.

The spelling of 20896700 in words is "twenty million, eight hundred ninety-six thousand, seven hundred".