2021490 has 32 divisors (see below), whose sum is σ = 5391360. Its totient is φ = 538992.

The previous prime is 2021489. The next prime is 2021497. The reversal of 2021490 is 941202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2021497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3474 + ... + 4013.

It is an arithmetic number, because the mean of its divisors is an integer number (168480).

2^2021490 is an apocalyptic number.

2021490 is an abundant number, since it is smaller than the sum of its proper divisors (3369870).

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

2021490 is a wasteful number, since it uses less digits than its factorization.

2021490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7503 (or 7497 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2021490 is about 1421.7911238997. The cubic root of 2021490 is about 126.4417600228.

Adding to 2021490 its reverse (941202), we get a palindrome (2962692).

The spelling of 2021490 in words is "two million, twenty-one thousand, four hundred ninety".