28358638398 has 48 divisors (see below), whose sum is σ = 62128213056. Its totient is φ = 9347803200.

The previous prime is 28358638393. The next prime is 28358638403. The reversal of 28358638398 is 89383685382.

It is an interprime number because it is at equal distance from previous prime (28358638393) and next prime (28358638403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28358638393) 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, 1541611 + ... + 1559897.

It is an arithmetic number, because the mean of its divisors is an integer number (1294337772).

Almost surely, 2^28358638398 is an apocalyptic number.

28358638398 is an abundant number, since it is smaller than the sum of its proper divisors (33769574658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28358638398 is a wasteful number, since it uses less digits than its factorization.

28358638398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19249 (or 19246 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 63.

The spelling of 28358638398 in words is "twenty-eight billion, three hundred fifty-eight million, six hundred thirty-eight thousand, three hundred ninety-eight".