3721008 has 20 divisors (see below), whose sum is σ = 9612728. Its totient is φ = 1240320.

The previous prime is 3720989. The next prime is 3721027. The reversal of 3721008 is 8001273.

It is an interprime number because it is at equal distance from previous prime (3720989) and next prime (3721027).

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38713 + ... + 38808.

Almost surely, 2^3721008 is an apocalyptic number.

It is an amenable number.

3721008 is an abundant number, since it is smaller than the sum of its proper divisors (5891720).

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

3721008 is a wasteful number, since it uses less digits than its factorization.

3721008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77532 (or 77526 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 3721008 is about 1928.9914463263. The cubic root of 3721008 is about 154.9602117783.

The spelling of 3721008 in words is "three million, seven hundred twenty-one thousand, eight".