2010721128 has 32 divisors (see below), whose sum is σ = 5413480800. Its totient is φ = 618683328.

The previous prime is 2010721127. The next prime is 2010721133. The reversal of 2010721128 is 8211270102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 2010721098 and 2010721107.

It is not an unprimeable number, because it can be changed into a prime (2010721123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3221998 + ... + 3222621.

It is an arithmetic number, because the mean of its divisors is an integer number (169171275).

Almost surely, 2^2010721128 is an apocalyptic number.

It is an amenable number.

2010721128 is an abundant number, since it is smaller than the sum of its proper divisors (3402759672).

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

2010721128 is a wasteful number, since it uses less digits than its factorization.

2010721128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6444641 (or 6444637 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 2010721128 is about 44841.0651969821. The cubic root of 2010721128 is about 1262.1683349015.

The spelling of 2010721128 in words is "two billion, ten million, seven hundred twenty-one thousand, one hundred twenty-eight".