3864420 has 72 divisors (see below), whose sum is σ = 13401024. Its totient is φ = 883008.

The previous prime is 3864409. The next prime is 3864433. The reversal of 3864420 is 244683.

3864420 = T₃₅₁ + T₃₅₂ + ... + T₄₀₄.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274 + ... + 2793.

Almost surely, 2^3864420 is an apocalyptic number.

3864420 is a gapful number since it is divisible by the number (30) 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 3864420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6700512).

3864420 is an abundant number, since it is smaller than the sum of its proper divisors (9536604).

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

3864420 is a wasteful number, since it uses less digits than its factorization.

3864420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089 (or 3084 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 3864420 is about 1965.8128089928. The cubic root of 3864420 is about 156.9259526134.

The spelling of 3864420 in words is "three million, eight hundred sixty-four thousand, four hundred twenty".