2021902 has 16 divisors (see below), whose sum is σ = 3160080. Its totient is φ = 969408.

The previous prime is 2021891. The next prime is 2021927. The reversal of 2021902 is 2091202.

It is a happy number.

It is a congruent number.

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, 6433 + ... + 6739.

It is an arithmetic number, because the mean of its divisors is an integer number (197505).

2^2021902 is an apocalyptic number.

2021902 is a deficient number, since it is larger than the sum of its proper divisors (1138178).

2021902 is a wasteful number, since it uses less digits than its factorization.

2021902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2021902 is about 1421.9360041858. The cubic root of 2021902 is about 126.4503494735.

The spelling of 2021902 in words is "two million, twenty-one thousand, nine hundred two".