7978848 has 48 divisors (see below), whose sum is σ = 22181040. Its totient is φ = 2502656.

The previous prime is 7978847. The next prime is 7978849. The reversal of 7978848 is 8488797.

It is an interprime number because it is at equal distance from previous prime (7978847) and next prime (7978849).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 7978848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7978847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813 + ... + 4076.

It is an arithmetic number, because the mean of its divisors is an integer number (462105).

Almost surely, 2^7978848 is an apocalyptic number.

It is an amenable number.

7978848 is an abundant number, since it is smaller than the sum of its proper divisors (14202192).

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

7978848 is a wasteful number, since it uses less digits than its factorization.

7978848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919 (or 4911 counting only the distinct ones).

The product of its digits is 903168, while the sum is 51.

The square root of 7978848 is about 2824.6854692160. The cubic root of 7978848 is about 199.8235777551.

Subtracting from 7978848 its sum of digits (51), we obtain a palindrome (7978797).

The spelling of 7978848 in words is "seven million, nine hundred seventy-eight thousand, eight hundred forty-eight".