20387696 has 40 divisors (see below), whose sum is σ = 46708320. Its totient is φ = 8434944.

The previous prime is 20387693. The next prime is 20387699. The reversal of 20387696 is 69678302.

It is an interprime number because it is at equal distance from previous prime (20387693) and next prime (20387699).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20387693) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 110 + ... + 6386.

It is an arithmetic number, because the mean of its divisors is an integer number (1167708).

Almost surely, 2^20387696 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 20387696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23354160).

20387696 is an abundant number, since it is smaller than the sum of its proper divisors (26320624).

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

20387696 is a wasteful number, since it uses less digits than its factorization.

20387696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6321 (or 6315 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 20387696 is about 4515.2736351189. The cubic root of 20387696 is about 273.1844969327.

The spelling of 20387696 in words is "twenty million, three hundred eighty-seven thousand, six hundred ninety-six".