2842290 has 120 divisors (see below), whose sum is σ = 8690220. Its totient is φ = 665280.

The previous prime is 2842283. The next prime is 2842291. The reversal of 2842290 is 922482.

It can be written as a sum of positive squares in 2 ways, for example, as 2832489 + 9801 = 1683^2 + 99^2 .

It is a super-2 number, since 2×2842290² = 16157224888200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2842291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 97996 + ... + 98024.

2^2842290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2842290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4345110).

2842290 is an abundant number, since it is smaller than the sum of its proper divisors (5847930).

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

2842290 is a wasteful number, since it uses less digits than its factorization.

2842290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2842290 is about 1685.9092502267. The cubic root of 2842290 is about 141.6520277069.

The spelling of 2842290 in words is "two million, eight hundred forty-two thousand, two hundred ninety".