20838468 has 24 divisors (see below), whose sum is σ = 55569472. Its totient is φ = 5953824.

The previous prime is 20838451. The next prime is 20838469. The reversal of 20838468 is 86483802.

It is not an unprimeable number, because it can be changed into a prime (20838469) 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, 123955 + ... + 124122.

Almost surely, 2^20838468 is an apocalyptic number.

20838468 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20838468 is an abundant number, since it is smaller than the sum of its proper divisors (34731004).

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

20838468 is a wasteful number, since it uses less digits than its factorization.

20838468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248091 (or 248089 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 20838468 is about 4564.9170857749. The cubic root of 20838468 is about 275.1832079453.

The spelling of 20838468 in words is "twenty million, eight hundred thirty-eight thousand, four hundred sixty-eight".