138871430 has 32 divisors (see below), whose sum is σ = 259791840. Its totient is φ = 53383680.

The previous prime is 138871429. The next prime is 138871489. The reversal of 138871430 is 34178831.

It is a congruent number.

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, 68897 + ... + 70883.

It is an arithmetic number, because the mean of its divisors is an integer number (8118495).

Almost surely, 2^138871430 is an apocalyptic number.

138871430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138871430 is a deficient number, since it is larger than the sum of its proper divisors (120920410).

138871430 is a wasteful number, since it uses less digits than its factorization.

138871430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 138871430 is about 11784.3722785730. The cubic root of 138871430 is about 517.8503838855.

The spelling of 138871430 in words is "one hundred thirty-eight million, eight hundred seventy-one thousand, four hundred thirty".