3861432 has 80 divisors (see below), whose sum is σ = 11107800. Its totient is φ = 1252800.

The previous prime is 3861419. The next prime is 3861433. The reversal of 3861432 is 2341683.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 3861396 and 3861405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861433) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 38182 + ... + 38282.

Almost surely, 2^3861432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3861432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5553900).

3861432 is an abundant number, since it is smaller than the sum of its proper divisors (7246368).

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

3861432 is a wasteful number, since it uses less digits than its factorization.

3861432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 165 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 3861432 is about 1965.0526710498. The cubic root of 3861432 is about 156.8854967236.

The spelling of 3861432 in words is "three million, eight hundred sixty-one thousand, four hundred thirty-two".