138106472 has 16 divisors (see below), whose sum is σ = 295942560. Its totient is φ = 59188464.

The previous prime is 138106471. The next prime is 138106481. The reversal of 138106472 is 274601831.

It is not an unprimeable number, because it can be changed into a prime (138106471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1233038 + ... + 1233149.

It is an arithmetic number, because the mean of its divisors is an integer number (18496410).

Almost surely, 2^138106472 is an apocalyptic number.

It is an amenable number.

138106472 is an abundant number, since it is smaller than the sum of its proper divisors (157836088).

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

138106472 is a wasteful number, since it uses less digits than its factorization.

138106472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466200 (or 2466196 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 138106472 is about 11751.8709999727. The cubic root of 138106472 is about 516.8977920261.

The spelling of 138106472 in words is "one hundred thirty-eight million, one hundred six thousand, four hundred seventy-two".