20126964 has 96 divisors (see below), whose sum is σ = 56843136. Its totient is φ = 5460480.

The previous prime is 20126933. The next prime is 20126983. The reversal of 20126964 is 46962102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63334 + ... + 63650.

It is an arithmetic number, because the mean of its divisors is an integer number (592116).

Almost surely, 2^20126964 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 20126964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28421568).

20126964 is an abundant number, since it is smaller than the sum of its proper divisors (36716172).

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

20126964 is a wasteful number, since it uses less digits than its factorization.

20126964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 20126964 is about 4486.3085047732. The cubic root of 20126964 is about 272.0149393467.

The spelling of 20126964 in words is "twenty million, one hundred twenty-six thousand, nine hundred sixty-four".