2021010028 has 12 divisors (see below), whose sum is σ = 3537085552. Its totient is φ = 1010414160.

The previous prime is 2021009999. The next prime is 2021010053. The reversal of 2021010028 is 8200101202.

It is a junction number, because it is equal to n+sod(n) for n = 2021009993 and 2021010020.

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, 64798 + ... + 90778.

Almost surely, 2^2021010028 is an apocalyptic number.

It is an amenable number.

2021010028 is a deficient number, since it is larger than the sum of its proper divisors (1516075524).

2021010028 is a wasteful number, since it uses less digits than its factorization.

2021010028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45432 (or 45430 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2021010028 is about 44955.6451182719. The cubic root of 2021010028 is about 1264.3175200752.

The spelling of 2021010028 in words is "two billion, twenty-one million, ten thousand, twenty-eight".