138861230 has 8 divisors (see below), whose sum is σ = 249950232. Its totient is φ = 55544488.

The previous prime is 138861211. The next prime is 138861263. The reversal of 138861230 is 32168831.

It is a happy number.

138861230 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×138861230² = 38564882394225800, 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 3 ways as a sum of consecutive naturals, for example, 6943052 + ... + 6943071.

It is an arithmetic number, because the mean of its divisors is an integer number (31243779).

Almost surely, 2^138861230 is an apocalyptic number.

138861230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138861230 is a deficient number, since it is larger than the sum of its proper divisors (111089002).

138861230 is a wasteful number, since it uses less digits than its factorization.

138861230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13886130.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 138861230 is about 11783.9394940741. The cubic root of 138861230 is about 517.8377050039.

The spelling of 138861230 in words is "one hundred thirty-eight million, eight hundred sixty-one thousand, two hundred thirty".