2021370 has 64 divisors (see below), whose sum is σ = 5370624. Its totient is φ = 483840.

The previous prime is 2021339. The next prime is 2021377. The reversal of 2021370 is 731202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (2021377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27654 + ... + 27726.

It is an arithmetic number, because the mean of its divisors is an integer number (83916).

2^2021370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2685312).

2021370 is an abundant number, since it is smaller than the sum of its proper divisors (3349254).

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

2021370 is a wasteful number, since it uses less digits than its factorization.

2021370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 2021370 is about 1421.7489229818. The cubic root of 2021370 is about 126.4392580215.

Adding to 2021370 its reverse (731202), we get a palindrome (2752572).

The spelling of 2021370 in words is "two million, twenty-one thousand, three hundred seventy".