20148020 has 12 divisors (see below), whose sum is σ = 42310884. Its totient is φ = 8059200.

The previous prime is 20147947. The next prime is 20148041. The reversal of 20148020 is 2084102.

It can be written as a sum of positive squares in 2 ways, for example, as 10942864 + 9205156 = 3308^2 + 3034^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20148020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503681 + ... + 503720.

It is an arithmetic number, because the mean of its divisors is an integer number (3525907).

Almost surely, 2^20148020 is an apocalyptic number.

20148020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20148020 is an abundant number, since it is smaller than the sum of its proper divisors (22162864).

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

20148020 is a wasteful number, since it uses less digits than its factorization.

20148020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007410 (or 1007408 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 20148020 is about 4488.6545868445. The cubic root of 20148020 is about 272.1097632260.

The spelling of 20148020 in words is "twenty million, one hundred forty-eight thousand, twenty".