4978240 has 56 divisors (see below), whose sum is σ = 12143232. Its totient is φ = 1943040.

The previous prime is 4978219. The next prime is 4978241. The reversal of 4978240 is 428794.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4978196 and 4978205.

It is not an unprimeable number, because it can be changed into a prime (4978241) 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 7 ways as a sum of consecutive naturals, for example, 14875 + ... + 15205.

Almost surely, 2^4978240 is an apocalyptic number.

4978240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4978240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6071616).

4978240 is an abundant number, since it is smaller than the sum of its proper divisors (7164992).

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

4978240 is a wasteful number, since it uses less digits than its factorization.

4978240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 4978240 is about 2231.1969881658. The cubic root of 4978240 is about 170.7491734313.

The spelling of 4978240 in words is "four million, nine hundred seventy-eight thousand, two hundred forty".