3857634 has 24 divisors (see below), whose sum is σ = 9118512. Its totient is φ = 1168920.

The previous prime is 3857621. The next prime is 3857641. The reversal of 3857634 is 4367583.

3857634 = T₅₂₁ + T₅₂₂ + ... + T₅₄₇.

It is a happy number.

It is a d-powerful number, because it can be written as 3⁴ + 8⁷ + 5⁷ + 7⁴ + 6⁸ + 3⁵ + 4² .

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 11 ways as a sum of consecutive naturals, for example, 9544 + ... + 9939.

It is an arithmetic number, because the mean of its divisors is an integer number (379938).

Almost surely, 2^3857634 is an apocalyptic number.

3857634 is an abundant number, since it is smaller than the sum of its proper divisors (5260878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3857634 is a wasteful number, since it uses less digits than its factorization.

3857634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19502 (or 19499 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 3857634 is about 1964.0860469949. The cubic root of 3857634 is about 156.8340437412.

The spelling of 3857634 in words is "three million, eight hundred fifty-seven thousand, six hundred thirty-four".