2087738 has 4 divisors (see below), whose sum is σ = 3131610. Its totient is φ = 1043868.

The previous prime is 2087717. The next prime is 2087741. The reversal of 2087738 is 8377802.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8377802 = 2 ⋅4188901.

It can be written as a sum of positive squares in only one way, i.e., 1803649 + 284089 = 1343^2 + 533^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2087698 and 2087707.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521933 + ... + 521936.

2^2087738 is an apocalyptic number.

2087738 is a deficient number, since it is larger than the sum of its proper divisors (1043872).

2087738 is a wasteful number, since it uses less digits than its factorization.

2087738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043871.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 2087738 is about 1444.9006886288. The cubic root of 2087738 is about 127.8081843761.

Subtracting 2087738 from its reverse (8377802), we obtain a square (6290064 = 2508²).

The spelling of 2087738 in words is "two million, eighty-seven thousand, seven hundred thirty-eight".