138248206 has 16 divisors (see below), whose sum is σ = 213312240. Its totient is φ = 67150080.

The previous prime is 138248179. The next prime is 138248219. The reversal of 138248206 is 602842831.

It is a super-2 number, since 2×138248206² = 38225132924436872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67741 + ... + 69751.

It is an arithmetic number, because the mean of its divisors is an integer number (13332015).

Almost surely, 2^138248206 is an apocalyptic number.

138248206 is a deficient number, since it is larger than the sum of its proper divisors (75064034).

138248206 is a wasteful number, since it uses less digits than its factorization.

138248206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 138248206 is about 11757.8997274173. The cubic root of 138248206 is about 517.0745564764.

The spelling of 138248206 in words is "one hundred thirty-eight million, two hundred forty-eight thousand, two hundred six".