20387202 has 32 divisors (see below), whose sum is σ = 44928000. Its totient is φ = 6115920.

The previous prime is 20387201. The next prime is 20387219. The reversal of 20387202 is 20278302.

It is not an unprimeable number, because it can be changed into a prime (20387201) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5299 + ... + 8297.

It is an arithmetic number, because the mean of its divisors is an integer number (1404000).

Almost surely, 2^20387202 is an apocalyptic number.

20387202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20387202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22464000).

20387202 is an abundant number, since it is smaller than the sum of its proper divisors (24540798).

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

20387202 is a wasteful number, since it uses less digits than its factorization.

20387202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20387202 is about 4515.2189315691. The cubic root of 20387202 is about 273.1822904674.

Subtracting from 20387202 its reverse (20278302), we obtain a square (108900 = 330²).

The spelling of 20387202 in words is "twenty million, three hundred eighty-seven thousand, two hundred two".