2215290 has 96 divisors (see below), whose sum is σ = 6796224. Its totient is φ = 456960.

The previous prime is 2215277. The next prime is 2215303. The reversal of 2215290 is 925122.

2215290 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2215277) and next prime (2215303).

It is a Harshad number since it is a multiple of its sum of digits (21).

2215290 is strictly pandigital in base 8.

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, 16102 + ... + 16238.

It is an arithmetic number, because the mean of its divisors is an integer number (70794).

2^2215290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2215290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3398112).

2215290 is an abundant number, since it is smaller than the sum of its proper divisors (4580934).

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

2215290 is a wasteful number, since it uses less digits than its factorization.

2215290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2215290 is about 1488.3850308304. The cubic root of 2215290 is about 130.3597530328.

The spelling of 2215290 in words is "two million, two hundred fifteen thousand, two hundred ninety".