28749698407 has 8 divisors (see below), whose sum is σ = 29123150400. Its totient is φ = 28376484864.

The previous prime is 28749698387. The next prime is 28749698413. The reversal of 28749698407 is 70489694782.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28749698407 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 (28749692407) 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, 189819 + ... + 305827.

It is an arithmetic number, because the mean of its divisors is an integer number (3640393800).

Almost surely, 2^28749698407 is an apocalyptic number.

28749698407 is a deficient number, since it is larger than the sum of its proper divisors (373451993).

28749698407 is a wasteful number, since it uses less digits than its factorization.

28749698407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119225.

The product of its (nonzero) digits is 48771072, while the sum is 64.

The spelling of 28749698407 in words is "twenty-eight billion, seven hundred forty-nine million, six hundred ninety-eight thousand, four hundred seven".