3945024 has 70 divisors (see below), whose sum is σ = 11709654. Its totient is φ = 1313280.

The previous prime is 3945017. The next prime is 3945031. The reversal of 3945024 is 4205493.

It is an interprime number because it is at equal distance from previous prime (3945017) and next prime (3945031).

It can be written as a sum of positive squares in only one way, i.e., 2073600 + 1871424 = 1440^2 + 1368^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4804 + ... + 5564.

Almost surely, 2^3945024 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 3945024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5854827).

3945024 is an abundant number, since it is smaller than the sum of its proper divisors (7764630).

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

3945024 is an equidigital number, since it uses as much as digits as its factorization.

3945024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 3945024 is about 1986.2084482753. The cubic root of 3945024 is about 158.0095064515.

The spelling of 3945024 in words is "three million, nine hundred forty-five thousand, twenty-four".