2912220 has 48 divisors (see below), whose sum is σ = 9061920. Its totient is φ = 776448.

The previous prime is 2912213. The next prime is 2912227. The reversal of 2912220 is 222192.

It is an interprime number because it is at equal distance from previous prime (2912213) and next prime (2912227).

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

It is a junction number, because it is equal to n+sod(n) for n = 2912193 and 2912202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2912227) 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, 2157 + ... + 3236.

It is an arithmetic number, because the mean of its divisors is an integer number (188790).

2^2912220 is an apocalyptic number.

2912220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2912220 is an abundant number, since it is smaller than the sum of its proper divisors (6149700).

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

2912220 is a wasteful number, since it uses less digits than its factorization.

2912220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5411 (or 5403 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2912220 is about 1706.5227803929. The cubic root of 2912220 is about 142.8043357203.

The spelling of 2912220 in words is "two million, nine hundred twelve thousand, two hundred twenty".