7428448247 has 4 divisors (see below), whose sum is σ = 8103761736. Its totient is φ = 6753134760.

The previous prime is 7428448243. The next prime is 7428448319.

7428448247 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 7428448247 - 2² = 7428448243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7428448195 and 7428448204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7428448243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337656728 + ... + 337656749.

It is an arithmetic number, because the mean of its divisors is an integer number (2025940434).

Almost surely, 2^7428448247 is an apocalyptic number.

7428448247 is a deficient number, since it is larger than the sum of its proper divisors (675313489).

7428448247 is a wasteful number, since it uses less digits than its factorization.

7428448247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675313488.

The product of its digits is 3211264, while the sum is 50.

The square root of 7428448247 is about 86188.4461340382. The cubic root of 7428448247 is about 1951.1891276156.

The spelling of 7428448247 in words is "seven billion, four hundred twenty-eight million, four hundred forty-eight thousand, two hundred forty-seven".