28650389398 has 16 divisors (see below), whose sum is σ = 44462065680. Its totient is φ = 13829802336.

The previous prime is 28650389393. The next prime is 28650389399. The reversal of 28650389398 is 89398305682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28650389393) 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, 743740 + ... + 781312.

It is an arithmetic number, because the mean of its divisors is an integer number (2778879105).

Almost surely, 2^28650389398 is an apocalyptic number.

28650389398 is a deficient number, since it is larger than the sum of its proper divisors (15811676282).

28650389398 is a wasteful number, since it uses less digits than its factorization.

28650389398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50751.

The product of its (nonzero) digits is 22394880, while the sum is 61.

The spelling of 28650389398 in words is "twenty-eight billion, six hundred fifty million, three hundred eighty-nine thousand, three hundred ninety-eight".