28434469751 has 4 divisors (see below), whose sum is σ = 28651526904. Its totient is φ = 28217412600.

The previous prime is 28434469669. The next prime is 28434469813. The reversal of 28434469751 is 15796443482.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28434469751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28434469693 and 28434469702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28434469351) 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, 108528380 + ... + 108528641.

It is an arithmetic number, because the mean of its divisors is an integer number (7162881726).

Almost surely, 2^28434469751 is an apocalyptic number.

28434469751 is a deficient number, since it is larger than the sum of its proper divisors (217057153).

28434469751 is a wasteful number, since it uses less digits than its factorization.

28434469751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217057152.

The product of its digits is 5806080, while the sum is 53.

The spelling of 28434469751 in words is "twenty-eight billion, four hundred thirty-four million, four hundred sixty-nine thousand, seven hundred fifty-one".