3857243 has 16 divisors (see below), whose sum is σ = 4354560. Its totient is φ = 3393696.

The previous prime is 3857233. The next prime is 3857263. The reversal of 3857243 is 3427583.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3857243 - 2⁶ = 3857179 is a prime.

It is a super-2 number, since 2×3857243² = 29756647122098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3857233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35996 + ... + 36102.

It is an arithmetic number, because the mean of its divisors is an integer number (272160).

Almost surely, 2^3857243 is an apocalyptic number.

3857243 is a deficient number, since it is larger than the sum of its proper divisors (497317).

3857243 is a wasteful number, since it uses less digits than its factorization.

3857243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226.

The product of its digits is 20160, while the sum is 32.

The square root of 3857243 is about 1963.9865070820. The cubic root of 3857243 is about 156.8287447952.

The spelling of 3857243 in words is "three million, eight hundred fifty-seven thousand, two hundred forty-three".