20027700 has 324 divisors, whose sum is σ = 83140512. Its totient is φ = 3916800.

The previous prime is 20027699. The next prime is 20027701. The reversal of 20027700 is 772002.

20027700 is nontrivially palindromic in base 13.

It is an interprime number because it is at equal distance from previous prime (20027699) and next prime (20027701).

It is a super-2 number, since 2×20027700² = 802217534580000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20027701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1178092 + ... + 1178108.

Almost surely, 2^20027700 is an apocalyptic number.

20027700 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 20027700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41570256).

20027700 is an abundant number, since it is smaller than the sum of its proper divisors (63112812).

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

20027700 is a wasteful number, since it uses less digits than its factorization.

20027700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 18.

The square root of 20027700 is about 4475.2318375700. The cubic root of 20027700 is about 271.5670194632.

Adding to 20027700 its reverse (772002), we get a palindrome (20799702).

The spelling of 20027700 in words is "twenty million, twenty-seven thousand, seven hundred".