138372470 has 16 divisors (see below), whose sum is σ = 249782400. Its totient is φ = 55190784.

The previous prime is 138372467. The next prime is 138372517. The reversal of 138372470 is 74273831.

It is a self number, because there is not a number n which added to its sum of digits gives 138372470.

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, 16070 + ... + 23129.

It is an arithmetic number, because the mean of its divisors is an integer number (15611400).

Almost surely, 2^138372470 is an apocalyptic number.

138372470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138372470 is a deficient number, since it is larger than the sum of its proper divisors (111409930).

138372470 is a wasteful number, since it uses less digits than its factorization.

138372470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39559.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 138372470 is about 11763.1828175881. The cubic root of 138372470 is about 517.2294337384.

The spelling of 138372470 in words is "one hundred thirty-eight million, three hundred seventy-two thousand, four hundred seventy".