28435423547 has 8 divisors (see below), whose sum is σ = 28768026960. Its totient is φ = 28103821600.

The previous prime is 28435423543. The next prime is 28435423553. The reversal of 28435423547 is 74532453482.

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

It is a cyclic number.

It is not a de Polignac number, because 28435423547 - 2² = 28435423543 is a prime.

It is a super-2 number, since 2×28435423547² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28435423543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193172 + ... + 306897.

It is an arithmetic number, because the mean of its divisors is an integer number (3596003370).

Almost surely, 2^28435423547 is an apocalyptic number.

28435423547 is a deficient number, since it is larger than the sum of its proper divisors (332603413).

28435423547 is a wasteful number, since it uses less digits than its factorization.

28435423547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500733.

The product of its digits is 3225600, while the sum is 47.

The spelling of 28435423547 in words is "twenty-eight billion, four hundred thirty-five million, four hundred twenty-three thousand, five hundred forty-seven".