28931439098 has 32 divisors (see below), whose sum is σ = 44681794560. Its totient is φ = 14043012480.

The previous prime is 28931439083. The next prime is 28931439113. The reversal of 28931439098 is 89093413982.

It is an interprime number because it is at equal distance from previous prime (28931439083) and next prime (28931439113).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6046415 + ... + 6051197.

It is an arithmetic number, because the mean of its divisors is an integer number (1396306080).

Almost surely, 2^28931439098 is an apocalyptic number.

28931439098 is a deficient number, since it is larger than the sum of its proper divisors (15750355462).

28931439098 is a wasteful number, since it uses less digits than its factorization.

28931439098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5342.

The product of its (nonzero) digits is 3359232, while the sum is 56.

The spelling of 28931439098 in words is "twenty-eight billion, nine hundred thirty-one million, four hundred thirty-nine thousand, ninety-eight".