138766352 has 10 divisors (see below), whose sum is σ = 268859838. Its totient is φ = 69383168.

The previous prime is 138766351. The next prime is 138766387. The reversal of 138766352 is 253667831.

It can be written as a sum of positive squares in only one way, i.e., 90935296 + 47831056 = 9536^2 + 6916^2 .

It is a super-2 number, since 2×138766352² = 38512200894775808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138766351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4336433 + ... + 4336464.

Almost surely, 2^138766352 is an apocalyptic number.

It is an amenable number.

138766352 is a deficient number, since it is larger than the sum of its proper divisors (130093486).

138766352 is an equidigital number, since it uses as much as digits as its factorization.

138766352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8672905 (or 8672899 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 138766352 is about 11779.9130726844. The cubic root of 138766352 is about 517.7197392722.

The spelling of 138766352 in words is "one hundred thirty-eight million, seven hundred sixty-six thousand, three hundred fifty-two".