7849218 has 32 divisors (see below), whose sum is σ = 17087616. Its totient is φ = 2389248.

The previous prime is 7849211. The next prime is 7849243. The reversal of 7849218 is 8129487.

It is a super-2 number, since 2×7849218² = 123220446423048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7849211) 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 15 ways as a sum of consecutive naturals, for example, 7546 + ... + 8522.

It is an arithmetic number, because the mean of its divisors is an integer number (533988).

Almost surely, 2^7849218 is an apocalyptic number.

7849218 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7849218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8543808).

7849218 is an abundant number, since it is smaller than the sum of its proper divisors (9238398).

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

7849218 is a wasteful number, since it uses less digits than its factorization.

7849218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098.

The product of its digits is 32256, while the sum is 39.

The square root of 7849218 is about 2801.6455878644. The cubic root of 7849218 is about 198.7355054498.

The spelling of 7849218 in words is "seven million, eight hundred forty-nine thousand, two hundred eighteen".