2028572820 has 72 divisors (see below), whose sum is σ = 6185326056. Its totient is φ = 538140672.

The previous prime is 2028572789. The next prime is 2028572831. The reversal of 2028572820 is 282758202.

2028572820 is a `hidden beast` number, since 2 + 0 + 2 + 8 + 572 + 82 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4112784 + 2024460036 = 2028^2 + 44994^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5544 + ... + 63936.

Almost surely, 2^2028572820 is an apocalyptic number.

2028572820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2028572820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3092663028).

2028572820 is an abundant number, since it is smaller than the sum of its proper divisors (4156753236).

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

2028572820 is a wasteful number, since it uses less digits than its factorization.

2028572820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58601 (or 58596 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 2028572820 is about 45039.6805050835. The cubic root of 2028572820 is about 1265.8926183414.

The spelling of 2028572820 in words is "two billion, twenty-eight million, five hundred seventy-two thousand, eight hundred twenty".