20700192 has 48 divisors (see below), whose sum is σ = 55121472. Its totient is φ = 6800640.

The previous prime is 20700191. The next prime is 20700193. The reversal of 20700192 is 29100702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20700191) and next prime (20700193).

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (20700191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5298 + ... + 8334.

It is an arithmetic number, because the mean of its divisors is an integer number (1148364).

Almost surely, 2^20700192 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 20700192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27560736).

20700192 is an abundant number, since it is smaller than the sum of its proper divisors (34421280).

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

20700192 is a wasteful number, since it uses less digits than its factorization.

20700192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121 (or 3113 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 20700192 is about 4549.7463665572. The cubic root of 20700192 is about 274.5731869444.

Adding to 20700192 its reverse (29100702), we get a palindrome (49800894).

The spelling of 20700192 in words is "twenty million, seven hundred thousand, one hundred ninety-two".