20382438 has 16 divisors (see below), whose sum is σ = 42080256. Its totient is φ = 6574920.

The previous prime is 20382437. The next prime is 20382463. The reversal of 20382438 is 83428302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20382437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54606 + ... + 54977.

It is an arithmetic number, because the mean of its divisors is an integer number (2630016).

Almost surely, 2^20382438 is an apocalyptic number.

20382438 is an abundant number, since it is smaller than the sum of its proper divisors (21697818).

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

20382438 is a wasteful number, since it uses less digits than its factorization.

20382438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109619.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 20382438 is about 4514.6913515765. The cubic root of 20382438 is about 273.1610100939.

The spelling of 20382438 in words is "twenty million, three hundred eighty-two thousand, four hundred thirty-eight".