3857436 has 96 divisors (see below), whose sum is σ = 11612160. Its totient is φ = 1094400.

The previous prime is 3857429. The next prime is 3857443. The reversal of 3857436 is 6347583.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3857429) and next prime (3857443).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 3⁵ + 8⁷ + 5⁷ + 7² + 4³ + 3⁷ + 6⁸ .

Its product of digits (60480) is a multiple of the sum of its prime divisors (224).

It is a self number, because there is not a number n which added to its sum of digits gives 3857436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20101 + ... + 20291.

It is an arithmetic number, because the mean of its divisors is an integer number (120960).

Almost surely, 2^3857436 is an apocalyptic number.

3857436 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3857436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5806080).

3857436 is an abundant number, since it is smaller than the sum of its proper divisors (7754724).

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

3857436 is a wasteful number, since it uses less digits than its factorization.

3857436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 224 counting only the distinct ones).

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

The square root of 3857436 is about 1964.0356412245. The cubic root of 3857436 is about 156.8313604323.

The spelling of 3857436 in words is "three million, eight hundred fifty-seven thousand, four hundred thirty-six".