7328778238 has 4 divisors (see below), whose sum is σ = 10993167360. Its totient is φ = 3664389118.

The previous prime is 7328778199. The next prime is 7328778257. The reversal of 7328778238 is 8328778237.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832194558 + ... + 1832194561.

It is an arithmetic number, because the mean of its divisors is an integer number (2748291840).

Almost surely, 2^7328778238 is an apocalyptic number.

7328778238 is a deficient number, since it is larger than the sum of its proper divisors (3664389122).

7328778238 is a wasteful number, since it uses less digits than its factorization.

7328778238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664389121.

The product of its digits is 6322176, while the sum is 55.

The square root of 7328778238 is about 85608.2836996514. The cubic root of 7328778238 is about 1942.4232161466.

Subtracting 7328778238 from its reverse (8328778237), we obtain a palindrome (999999999).

It can be divided in two parts, 73287 and 78238, that added together give a triangular number (151525 = T₅₅₀).

The spelling of 7328778238 in words is "seven billion, three hundred twenty-eight million, seven hundred seventy-eight thousand, two hundred thirty-eight".