3146220 has 144 divisors (see below), whose sum is σ = 11950848. Its totient is φ = 650880.

The previous prime is 3146219. The next prime is 3146237. The reversal of 3146220 is 226413.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 3⁵ + 1 + 4¹⁰ + 6³ + 2⁵ + 2²¹ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 3146193 and 3146202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13747 + ... + 13973.

It is an arithmetic number, because the mean of its divisors is an integer number (82992).

Almost surely, 2^3146220 is an apocalyptic number.

3146220 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 3146220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5975424).

3146220 is an abundant number, since it is smaller than the sum of its proper divisors (8804628).

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

3146220 is a wasteful number, since it uses less digits than its factorization.

3146220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3146220 is about 1773.7587209088. The cubic root of 3146220 is about 146.5310615295.

The spelling of 3146220 in words is "three million, one hundred forty-six thousand, two hundred twenty".