28433688437 has 8 divisors (see below), whose sum is σ = 35449793472. Its totient is φ = 22156120800.

The previous prime is 28433688431. The next prime is 28433688449. The reversal of 28433688437 is 73488633482.

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

It is not a de Polignac number, because 28433688437 - 2⁶ = 28433688373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28433688431) 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, 184634264 + ... + 184634417.

It is an arithmetic number, because the mean of its divisors is an integer number (4431224184).

Almost surely, 2^28433688437 is an apocalyptic number.

It is an amenable number.

28433688437 is a deficient number, since it is larger than the sum of its proper divisors (7016105035).

28433688437 is a wasteful number, since it uses less digits than its factorization.

28433688437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369268699.

The product of its digits is 18579456, while the sum is 56.

The spelling of 28433688437 in words is "twenty-eight billion, four hundred thirty-three million, six hundred eighty-eight thousand, four hundred thirty-seven".