138562248 has 32 divisors (see below), whose sum is σ = 377897760. Its totient is φ = 41988480.

The previous prime is 138562243. The next prime is 138562271. The reversal of 138562248 is 842265831.

It is not an unprimeable number, because it can be changed into a prime (138562243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262165 + ... + 262692.

It is an arithmetic number, because the mean of its divisors is an integer number (11809305).

Almost surely, 2^138562248 is an apocalyptic number.

It is an amenable number.

138562248 is an abundant number, since it is smaller than the sum of its proper divisors (239335512).

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

138562248 is a wasteful number, since it uses less digits than its factorization.

138562248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524877 (or 524873 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 138562248 is about 11771.2466629495. The cubic root of 138562248 is about 517.4657859711.

The spelling of 138562248 in words is "one hundred thirty-eight million, five hundred sixty-two thousand, two hundred forty-eight".