2112390 has 72 divisors (see below), whose sum is σ = 6402240. Its totient is φ = 481824.

The previous prime is 2112353. The next prime is 2112413. The reversal of 2112390 is 932112.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4171 + ... + 4649.

It is an arithmetic number, because the mean of its divisors is an integer number (88920).

2^2112390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3201120).

2112390 is an abundant number, since it is smaller than the sum of its proper divisors (4289850).

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

2112390 is a wasteful number, since it uses less digits than its factorization.

2112390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 2112390 is about 1453.4063437319. The cubic root of 2112390 is about 128.3092700521.

It can be divided in two parts, 211 and 2390, that added together give a square (2601 = 51²).

The spelling of 2112390 in words is "two million, one hundred twelve thousand, three hundred ninety".