2021690232 has 96 divisors (see below), whose sum is σ = 5673673200. Its totient is φ = 667021824.

The previous prime is 2021690221. The next prime is 2021690233. The reversal of 2021690232 is 2320961202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2021690196 and 2021690205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021690233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2757738 + ... + 2758470.

Almost surely, 2^2021690232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021690232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2836836600).

2021690232 is an abundant number, since it is smaller than the sum of its proper divisors (3651982968).

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

2021690232 is a wasteful number, since it uses less digits than its factorization.

2021690232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2021690232 is about 44963.2097608701. The cubic root of 2021690232 is about 1264.4593464160.

The spelling of 2021690232 in words is "two billion, twenty-one million, six hundred ninety thousand, two hundred thirty-two".