3953220 has 48 divisors (see below), whose sum is σ = 11346048. Its totient is φ = 1027840.

The previous prime is 3953189. The next prime is 3953233. The reversal of 3953220 is 223593.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1657 + ... + 3263.

It is an arithmetic number, because the mean of its divisors is an integer number (236376).

Almost surely, 2^3953220 is an apocalyptic number.

3953220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3953220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5673024).

3953220 is an abundant number, since it is smaller than the sum of its proper divisors (7392828).

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

3953220 is a wasteful number, since it uses less digits than its factorization.

3953220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660 (or 1658 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 3953220 is about 1988.2706053251. The cubic root of 3953220 is about 158.1188551826.

The spelling of 3953220 in words is "three million, nine hundred fifty-three thousand, two hundred twenty".