2021958 has 12 divisors (see below), whose sum is σ = 4380948. Its totient is φ = 673980.

The previous prime is 2021933. The next prime is 2021959. The reversal of 2021958 is 8591202.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56148 + ... + 56183.

It is an arithmetic number, because the mean of its divisors is an integer number (365079).

2^2021958 is an apocalyptic number.

2021958 is an abundant number, since it is smaller than the sum of its proper divisors (2358990).

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

2021958 is a wasteful number, since it uses less digits than its factorization.

2021958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112339 (or 112336 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 2021958 is about 1421.9556955123. The cubic root of 2021958 is about 126.4515168816.

The spelling of 2021958 in words is "two million, twenty-one thousand, nine hundred fifty-eight".