2028261864 has 32 divisors (see below), whose sum is σ = 5082445440. Its totient is φ = 674515200.

The previous prime is 2028261853. The next prime is 2028261871. The reversal of 2028261864 is 4681628202.

2028261864 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2028261864² = 8227692377913508992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87697 + ... + 108384.

It is an arithmetic number, because the mean of its divisors is an integer number (158826420).

Almost surely, 2^2028261864 is an apocalyptic number.

2028261864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2028261864 is an abundant number, since it is smaller than the sum of its proper divisors (3054183576).

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

2028261864 is a wasteful number, since it uses less digits than its factorization.

2028261864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196521 (or 196517 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 2028261864 is about 45036.2283500739. The cubic root of 2028261864 is about 1265.8279329599.

The spelling of 2028261864 in words is "two billion, twenty-eight million, two hundred sixty-one thousand, eight hundred sixty-four".