3721738 has 4 divisors (see below), whose sum is σ = 5582610. Its totient is φ = 1860868.

The previous prime is 3721727. The next prime is 3721741. The reversal of 3721738 is 8371273.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2832489 + 889249 = 1683^2 + 943^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 930433 + ... + 930436.

Almost surely, 2^3721738 is an apocalyptic number.

3721738 is a deficient number, since it is larger than the sum of its proper divisors (1860872).

3721738 is a wasteful number, since it uses less digits than its factorization.

3721738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860871.

The product of its digits is 7056, while the sum is 31.

The square root of 3721738 is about 1929.1806550969. The cubic root of 3721738 is about 154.9703446561.

The spelling of 3721738 in words is "three million, seven hundred twenty-one thousand, seven hundred thirty-eight".