28470229443 has 24 divisors (see below), whose sum is σ = 43552602288. Its totient is φ = 17859612672.

The previous prime is 28470229427. The next prime is 28470229483. The reversal of 28470229443 is 34492207482.

It is a happy number.

It is not a de Polignac number, because 28470229443 - 2⁴ = 28470229427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28470229483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 744355 + ... + 781667.

It is an arithmetic number, because the mean of its divisors is an integer number (1814691762).

Almost surely, 2^28470229443 is an apocalyptic number.

28470229443 is a deficient number, since it is larger than the sum of its proper divisors (15082372845).

28470229443 is a wasteful number, since it uses less digits than its factorization.

28470229443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42323 (or 42320 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 28470229443 in words is "twenty-eight billion, four hundred seventy million, two hundred twenty-nine thousand, four hundred forty-three".