3152220 has 48 divisors (see below), whose sum is σ = 8926848. Its totient is φ = 831040.

The previous prime is 3152207. The next prime is 3152221. The reversal of 3152220 is 222513.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3152220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3152221) 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, 6175 + ... + 6665.

It is an arithmetic number, because the mean of its divisors is an integer number (185976).

Almost surely, 2^3152220 is an apocalyptic number.

3152220 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 3152220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4463424).

3152220 is an abundant number, since it is smaller than the sum of its proper divisors (5774628).

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

3152220 is a wasteful number, since it uses less digits than its factorization.

3152220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 3152220 is about 1775.4492389252. The cubic root of 3152220 is about 146.6241497513.

Adding to 3152220 its reverse (222513), we get a palindrome (3374733).

The spelling of 3152220 in words is "three million, one hundred fifty-two thousand, two hundred twenty".