20306148 has 96 divisors (see below), whose sum is σ = 53222400. Its totient is φ = 6002304.

The previous prime is 20306137. The next prime is 20306149. The reversal of 20306148 is 84160302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20306149) 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 31 ways as a sum of consecutive naturals, for example, 344143 + ... + 344201.

It is an arithmetic number, because the mean of its divisors is an integer number (554400).

Almost surely, 2^20306148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20306148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26611200).

20306148 is an abundant number, since it is smaller than the sum of its proper divisors (32916252).

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

20306148 is a wasteful number, since it uses less digits than its factorization.

20306148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20306148 is about 4506.2343481004. The cubic root of 20306148 is about 272.8197766613.

The spelling of 20306148 in words is "twenty million, three hundred six thousand, one hundred forty-eight".