7818048 has 126 divisors (see below), whose sum is σ = 26161746. Its totient is φ = 2225664.

The previous prime is 7818037. The next prime is 7818049. The reversal of 7818048 is 8408187.

It can be written as a sum of positive squares in only one way, i.e., 5531904 + 2286144 = 2352^2 + 1512^2 .

It is a tau number, because it is divible by the number of its divisors (126).

It is a super-2 number, since 2×7818048² = 122243749060608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7818049) 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 17 ways as a sum of consecutive naturals, for example, 28086 + ... + 28362.

Almost surely, 2^7818048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7818048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13080873).

7818048 is an abundant number, since it is smaller than the sum of its proper divisors (18343698).

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

7818048 is a wasteful number, since it uses less digits than its factorization.

7818048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 7818048 is about 2796.0772521517. The cubic root of 7818048 is about 198.4720905207.

The spelling of 7818048 in words is "seven million, eight hundred eighteen thousand, forty-eight".