138856098 has 8 divisors (see below), whose sum is σ = 277712208. Its totient is φ = 46285364.

The previous prime is 138856097. The next prime is 138856103. The reversal of 138856098 is 890658831.

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

138856098 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (138856097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11571336 + ... + 11571347.

It is an arithmetic number, because the mean of its divisors is an integer number (34714026).

Almost surely, 2^138856098 is an apocalyptic number.

138856098 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

138856098 is a wasteful number, since it uses less digits than its factorization.

138856098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23142688.

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 138856098 is about 11783.7217380588. The cubic root of 138856098 is about 517.8313255515.

The spelling of 138856098 in words is "one hundred thirty-eight million, eight hundred fifty-six thousand, ninety-eight".