2028900720 has 160 divisors (see below), whose sum is σ = 7841640960. Its totient is φ = 421585920.

The previous prime is 2028900689. The next prime is 2028900737. The reversal of 2028900720 is 270098202.

2028900720 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36415 + ... + 73374.

It is an arithmetic number, because the mean of its divisors is an integer number (49010256).

Almost surely, 2^2028900720 is an apocalyptic number.

2028900720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2028900720 is an abundant number, since it is smaller than the sum of its proper divisors (5812740240).

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

2028900720 is a wasteful number, since it uses less digits than its factorization.

2028900720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109823 (or 109817 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2028900720 is about 45043.3204815098. The cubic root of 2028900720 is about 1265.9608212708.

Adding to 2028900720 its reverse (270098202), we get a palindrome (2298998922).

The spelling of 2028900720 in words is "two billion, twenty-eight million, nine hundred thousand, seven hundred twenty".