2072981 has 6 divisors (see below), whose sum is σ = 2107170. Its totient is φ = 2039328.

The previous prime is 2072977. The next prime is 2073011. The reversal of 2072981 is 1892702.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 207025 + 1865956 = 455^2 + 1366^2 .

It is not a de Polignac number, because 2072981 - 2² = 2072977 is a prime.

It is a super-2 number, since 2×2072981² = 8594500452722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2074981) 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, 5135 + ... + 5523.

It is an arithmetic number, because the mean of its divisors is an integer number (351195).

2^2072981 is an apocalyptic number.

It is an amenable number.

2072981 is a deficient number, since it is larger than the sum of its proper divisors (34189).

2072981 is an frugal number, since it uses more digits than its factorization.

2072981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2072981 is about 1439.7850534021. The cubic root of 2072981 is about 127.5063382726.

The spelling of 2072981 in words is "two million, seventy-two thousand, nine hundred eighty-one".