3948220 has 24 divisors (see below), whose sum is σ = 8369424. Its totient is φ = 1564416.

The previous prime is 3948187. The next prime is 3948223. The reversal of 3948220 is 228493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3948223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387 + ... + 3133.

It is an arithmetic number, because the mean of its divisors is an integer number (348726).

Almost surely, 2^3948220 is an apocalyptic number.

It is an amenable number.

3948220 is an abundant number, since it is smaller than the sum of its proper divisors (4421204).

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

3948220 is a wasteful number, since it uses less digits than its factorization.

3948220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869 (or 1867 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 3948220 is about 1987.0128333758. The cubic root of 3948220 is about 158.0521645841.

The spelling of 3948220 in words is "three million, nine hundred forty-eight thousand, two hundred twenty".