428271733247 has 4 divisors (see below), whose sum is σ = 428274186600. Its totient is φ = 428269279896.

The previous prime is 428271733237. The next prime is 428271733301. The reversal of 428271733247 is 742337172824.

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 428271733247 - 2⁸ = 428271732991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428271733195 and 428271733204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428271733217) 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, 942953 + ... + 1321250.

It is an arithmetic number, because the mean of its divisors is an integer number (107068546650).

Almost surely, 2^428271733247 is an apocalyptic number.

428271733247 is a deficient number, since it is larger than the sum of its proper divisors (2453353).

428271733247 is a wasteful number, since it uses less digits than its factorization.

428271733247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453352.

The product of its digits is 3161088, while the sum is 50.

The spelling of 428271733247 in words is "four hundred twenty-eight billion, two hundred seventy-one million, seven hundred thirty-three thousand, two hundred forty-seven".