138889248 has 48 divisors (see below), whose sum is σ = 366037056. Its totient is φ = 46112000.

The previous prime is 138889237. The next prime is 138889291. The reversal of 138889248 is 842988831.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 138889248.

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, 22498 + ... + 27998.

It is an arithmetic number, because the mean of its divisors is an integer number (7625772).

Almost surely, 2^138889248 is an apocalyptic number.

It is an amenable number.

138889248 is an abundant number, since it is smaller than the sum of its proper divisors (227147808).

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

138889248 is a wasteful number, since it uses less digits than its factorization.

138889248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5777 (or 5769 counting only the distinct ones).

The product of its digits is 884736, while the sum is 51.

The square root of 138889248 is about 11785.1282555601. The cubic root of 138889248 is about 517.8725306619.

The spelling of 138889248 in words is "one hundred thirty-eight million, eight hundred eighty-nine thousand, two hundred forty-eight".