3896720 has 40 divisors (see below), whose sum is σ = 9207744. Its totient is φ = 1533312.

The previous prime is 3896707. The next prime is 3896743. The reversal of 3896720 is 276983.

It is a tau number, because it is divible by the number of its divisors (40).

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, 4997 + ... + 5723.

Almost surely, 2^3896720 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 3896720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4603872).

3896720 is an abundant number, since it is smaller than the sum of its proper divisors (5311024).

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

3896720 is a wasteful number, since it uses less digits than its factorization.

3896720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 3896720 is about 1974.0111448520. The cubic root of 3896720 is about 157.3619517669.

The spelling of 3896720 in words is "three million, eight hundred ninety-six thousand, seven hundred twenty".