138770298 has 24 divisors (see below), whose sum is σ = 303431700. Its totient is φ = 45831744.

The previous prime is 138770297. The next prime is 138770311. The reversal of 138770298 is 892077831.

It can be written as a sum of positive squares in 2 ways, for example, as 134861769 + 3908529 = 11613^2 + 1977^2 .

It is not an unprimeable number, because it can be changed into a prime (138770297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33403 + ... + 37326.

Almost surely, 2^138770298 is an apocalyptic number.

138770298 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

138770298 is an abundant number, since it is smaller than the sum of its proper divisors (164661402).

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

138770298 is a wasteful number, since it uses less digits than its factorization.

138770298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70846 (or 70843 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 138770298 is about 11780.0805599962. The cubic root of 138770298 is about 517.7246465683.

The spelling of 138770298 in words is "one hundred thirty-eight million, seven hundred seventy thousand, two hundred ninety-eight".