20700084 has 48 divisors (see below), whose sum is σ = 52920000. Its totient is φ = 6268416.

The previous prime is 20700083. The next prime is 20700103. The reversal of 20700084 is 48000702.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20700084.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20700083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4167 + ... + 7665.

It is an arithmetic number, because the mean of its divisors is an integer number (1102500).

Almost surely, 2^20700084 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20700084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26460000).

20700084 is an abundant number, since it is smaller than the sum of its proper divisors (32219916).

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

20700084 is a wasteful number, since it uses less digits than its factorization.

20700084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3552 (or 3550 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 20700084 is about 4549.7344977482. The cubic root of 20700084 is about 274.5727094294.

Adding to 20700084 its reverse (48000702), we get a palindrome (68700786).

The spelling of 20700084 in words is "twenty million, seven hundred thousand, eighty-four".