7228494393 has 8 divisors (see below), whose sum is σ = 9638572128. Its totient is φ = 4818706464.

The previous prime is 7228494359. The next prime is 7228494397. The reversal of 7228494393 is 3934948227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7228494393 - 2²⁰ = 7227445817 is a prime.

It is a super-2 number, since 2×7228494393² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7228494397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5380 + ... + 120357.

It is an arithmetic number, because the mean of its divisors is an integer number (1204821516).

Almost surely, 2^7228494393 is an apocalyptic number.

It is an amenable number.

7228494393 is a deficient number, since it is larger than the sum of its proper divisors (2410077735).

7228494393 is a wasteful number, since it uses less digits than its factorization.

7228494393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144903.

The product of its digits is 2612736, while the sum is 51.

The square root of 7228494393 is about 85020.5527681395. The cubic root of 7228494393 is about 1933.5227341563.

The spelling of 7228494393 in words is "seven billion, two hundred twenty-eight million, four hundred ninety-four thousand, three hundred ninety-three".