2913220 has 12 divisors (see below), whose sum is σ = 6117804. Its totient is φ = 1165280.

The previous prime is 2913193. The next prime is 2913223. The reversal of 2913220 is 223192.

It is a happy number.

2913220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 891136 + 2022084 = 944^2 + 1422^2 .

It is not an unprimeable number, because it can be changed into a prime (2913223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72811 + ... + 72850.

It is an arithmetic number, because the mean of its divisors is an integer number (509817).

2^2913220 is an apocalyptic number.

2913220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2913220 is an abundant number, since it is smaller than the sum of its proper divisors (3204584).

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

2913220 is a wasteful number, since it uses less digits than its factorization.

2913220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145670 (or 145668 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2913220 is about 1706.8157486970. The cubic root of 2913220 is about 142.8206792651.

The spelling of 2913220 in words is "two million, nine hundred thirteen thousand, two hundred twenty".