20251896 has 96 divisors (see below), whose sum is σ = 62421840. Its totient is φ = 5440512.

The previous prime is 20251859. The next prime is 20251949. The reversal of 20251896 is 69815202.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 19486 + ... + 20498.

Almost surely, 2^20251896 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 20251896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31210920).

20251896 is an abundant number, since it is smaller than the sum of its proper divisors (42169944).

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

20251896 is a wasteful number, since it uses less digits than its factorization.

20251896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 20251896 is about 4500.2106617357. The cubic root of 20251896 is about 272.5765954757.

The spelling of 20251896 in words is "twenty million, two hundred fifty-one thousand, eight hundred ninety-six".