7287430878 has 96 divisors (see below), whose sum is σ = 19458129600. Its totient is φ = 1919490048.

The previous prime is 7287430847. The next prime is 7287430879. The reversal of 7287430878 is 8780347827.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7287430879) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1519308 + ... + 1524096.

It is an arithmetic number, because the mean of its divisors is an integer number (202688850).

Almost surely, 2^7287430878 is an apocalyptic number.

7287430878 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 7287430878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9729064800).

7287430878 is an abundant number, since it is smaller than the sum of its proper divisors (12170698722).

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

7287430878 is a wasteful number, since it uses less digits than its factorization.

7287430878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5746 (or 5743 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 54.

The square root of 7287430878 is about 85366.4505411816. The cubic root of 7287430878 is about 1938.7634162592.

The spelling of 7287430878 in words is "seven billion, two hundred eighty-seven million, four hundred thirty thousand, eight hundred seventy-eight".