20189676 has 96 divisors (see below), whose sum is σ = 56222208. Its totient is φ = 5575680.

The previous prime is 20189651. The next prime is 20189681. The reversal of 20189676 is 67698102.

20189676 = T₅₃ + T₅₄ + ... + T₄₉₄.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 60831 + ... + 61161.

It is an arithmetic number, because the mean of its divisors is an integer number (585648).

Almost surely, 2^20189676 is an apocalyptic number.

20189676 is a gapful number since it is divisible by the number (26) 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 20189676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28111104).

20189676 is an abundant number, since it is smaller than the sum of its proper divisors (36032532).

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

20189676 is a wasteful number, since it uses less digits than its factorization.

20189676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 20189676 is about 4493.2923341354. The cubic root of 20189676 is about 272.2971629731.

The spelling of 20189676 in words is "twenty million, one hundred eighty-nine thousand, six hundred seventy-six".