7247997428 has 48 divisors (see below), whose sum is σ = 14712028800. Its totient is φ = 3060094464.

The previous prime is 7247997403. The next prime is 7247997461. The reversal of 7247997428 is 8247997427.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2375648 + ... + 2378696.

It is an arithmetic number, because the mean of its divisors is an integer number (306500600).

Almost surely, 2^7247997428 is an apocalyptic number.

It is an amenable number.

7247997428 is an abundant number, since it is smaller than the sum of its proper divisors (7464031372).

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

7247997428 is a wasteful number, since it uses less digits than its factorization.

7247997428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296 (or 4294 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 59.

The square root of 7247997428 is about 85135.1715097820. The cubic root of 7247997428 is about 1935.2601036931.

Subtracting 7247997428 from its reverse (8247997427), we obtain a palindrome (999999999).

The spelling of 7247997428 in words is "seven billion, two hundred forty-seven million, nine hundred ninety-seven thousand, four hundred twenty-eight".