20488378 has 8 divisors (see below), whose sum is σ = 30756960. Its totient is φ = 10236060.

The previous prime is 20488373. The next prime is 20488387. The reversal of 20488378 is 87388402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20488378.

It is not an unprimeable number, because it can be changed into a prime (20488373) 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 3 ways as a sum of consecutive naturals, for example, 168 + ... + 6403.

It is an arithmetic number, because the mean of its divisors is an integer number (3844620).

Almost surely, 2^20488378 is an apocalyptic number.

20488378 is a deficient number, since it is larger than the sum of its proper divisors (10268582).

20488378 is a wasteful number, since it uses less digits than its factorization.

20488378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8132.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 20488378 is about 4526.4089519176. The cubic root of 20488378 is about 273.6334541386.

The spelling of 20488378 in words is "twenty million, four hundred eighty-eight thousand, three hundred seventy-eight".