20380448 has 24 divisors (see below), whose sum is σ = 43772400. Its totient is φ = 9263680.

The previous prime is 20380439. The next prime is 20380453. The reversal of 20380448 is 84408302.

It is a self number, because there is not a number n which added to its sum of digits gives 20380448.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 28598 + ... + 29301.

It is an arithmetic number, because the mean of its divisors is an integer number (1823850).

Almost surely, 2^20380448 is an apocalyptic number.

It is an amenable number.

20380448 is an abundant number, since it is smaller than the sum of its proper divisors (23391952).

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

20380448 is a wasteful number, since it uses less digits than its factorization.

20380448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57920 (or 57912 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 20380448 is about 4514.4709546081. The cubic root of 20380448 is about 273.1521199552.

The spelling of 20380448 in words is "twenty million, three hundred eighty thousand, four hundred forty-eight".