3865472 has 64 divisors (see below), whose sum is σ = 8739360. Its totient is φ = 1689600.

The previous prime is 3865469. The next prime is 3865481. The reversal of 3865472 is 2745683.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38222 + ... + 38322.

Almost surely, 2^3865472 is an apocalyptic number.

3865472 is a gapful number since it is divisible by the number (32) 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 3865472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4369680).

3865472 is an abundant number, since it is smaller than the sum of its proper divisors (4873888).

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

3865472 is a wasteful number, since it uses less digits than its factorization.

3865472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 139 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 3865472 is about 1966.0803645833. The cubic root of 3865472 is about 156.9401911558.

The spelling of 3865472 in words is "three million, eight hundred sixty-five thousand, four hundred seventy-two".