20148318 has 32 divisors (see below), whose sum is σ = 45350400. Its totient is φ = 6629688.

The previous prime is 20148269. The next prime is 20148329. The reversal of 20148318 is 81384102.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20148291 and 20148300.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1905 + ... + 6627.

It is an arithmetic number, because the mean of its divisors is an integer number (1417200).

Almost surely, 2^20148318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20148318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22675200).

20148318 is an abundant number, since it is smaller than the sum of its proper divisors (25202082).

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

20148318 is a wasteful number, since it uses less digits than its factorization.

20148318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4813 (or 4807 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 20148318 is about 4488.6877815237. The cubic root of 20148318 is about 272.1111047691. Note that the first 4 decimals are identical.

The spelling of 20148318 in words is "twenty million, one hundred forty-eight thousand, three hundred eighteen".