20148816 has 40 divisors (see below), whose sum is σ = 54793120. Its totient is φ = 6362496.

The previous prime is 20148809. The next prime is 20148827. The reversal of 20148816 is 61884102.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10135 + ... + 11958.

It is an arithmetic number, because the mean of its divisors is an integer number (1369828).

Almost surely, 2^20148816 is an apocalyptic number.

It is an amenable number.

20148816 is an abundant number, since it is smaller than the sum of its proper divisors (34644304).

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

20148816 is a wasteful number, since it uses less digits than its factorization.

20148816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22123 (or 22117 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 20148816 is about 4488.7432539632. The cubic root of 20148816 is about 272.1133466471.

The spelling of 20148816 in words is "twenty million, one hundred forty-eight thousand, eight hundred sixteen".