3901812 has 48 divisors (see below), whose sum is σ = 9687552. Its totient is φ = 1219680.

The previous prime is 3901801. The next prime is 3901819. The reversal of 3901812 is 2181093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3901819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18387 + ... + 18597.

It is an arithmetic number, because the mean of its divisors is an integer number (201824).

Almost surely, 2^3901812 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 3901812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4843776).

3901812 is an abundant number, since it is smaller than the sum of its proper divisors (5785740).

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

3901812 is a wasteful number, since it uses less digits than its factorization.

3901812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 3901812 is about 1975.3004834708. The cubic root of 3901812 is about 157.4304656526.

The spelling of 3901812 in words is "three million, nine hundred one thousand, eight hundred twelve".