3861730 has 8 divisors (see below), whose sum is σ = 6951132. Its totient is φ = 1544688.

The previous prime is 3861721. The next prime is 3861743. The reversal of 3861730 is 371683.

It can be written as a sum of positive squares in 2 ways, for example, as 3767481 + 94249 = 1941^2 + 307^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 193077 + ... + 193096.

Almost surely, 2^3861730 is an apocalyptic number.

3861730 is a deficient number, since it is larger than the sum of its proper divisors (3089402).

3861730 is a wasteful number, since it uses less digits than its factorization.

3861730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386180.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 3861730 is about 1965.1284945265. The cubic root of 3861730 is about 156.8895324177.

It can be divided in two parts, 386 and 1730, that added together give a square (2116 = 46²).

The spelling of 3861730 in words is "three million, eight hundred sixty-one thousand, seven hundred thirty".