3961628 has 24 divisors (see below), whose sum is σ = 7620480. Its totient is φ = 1787120.

The previous prime is 3961619. The next prime is 3961631. The reversal of 3961628 is 8261693.

It is a zygodrome in base 2.

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, 7625 + ... + 8127.

It is an arithmetic number, because the mean of its divisors is an integer number (317520).

Almost surely, 2^3961628 is an apocalyptic number.

It is an amenable number.

3961628 is a deficient number, since it is larger than the sum of its proper divisors (3658852).

3961628 is a wasteful number, since it uses less digits than its factorization.

3961628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697 (or 695 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 3961628 is about 1990.3838825714. The cubic root of 3961628 is about 158.2308754187.

The spelling of 3961628 in words is "three million, nine hundred sixty-one thousand, six hundred twenty-eight".