138263552 has 44 divisors (see below), whose sum is σ = 315893040. Its totient is φ = 59252736.

The previous prime is 138263537. The next prime is 138263569. The reversal of 138263552 is 255362831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2477 + ... + 16812.

Almost surely, 2^138263552 is an apocalyptic number.

It is an amenable number.

138263552 is an abundant number, since it is smaller than the sum of its proper divisors (177629488).

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

138263552 is an equidigital number, since it uses as much as digits as its factorization.

138263552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19316 (or 19298 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 138263552 is about 11758.5522918427. The cubic root of 138263552 is about 517.0936880871.

The spelling of 138263552 in words is "one hundred thirty-eight million, two hundred sixty-three thousand, five hundred fifty-two".