138267776 has 16 divisors (see below), whose sum is σ = 275455590. Its totient is φ = 69133824.

The previous prime is 138267763. The next prime is 138267793. The reversal of 138267776 is 677762831.

138267776 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 97614400 + 40653376 = 9880^2 + 6376^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 138267776.

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 as a sum of consecutive naturals, namely, 539981 + ... + 540236.

Almost surely, 2^138267776 is an apocalyptic number.

138267776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138267776 is a deficient number, since it is larger than the sum of its proper divisors (137187814).

138267776 is an equidigital number, since it uses as much as digits as its factorization.

138267776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080231 (or 1080219 counting only the distinct ones).

The product of its digits is 592704, while the sum is 47.

The square root of 138267776 is about 11758.7319044189. The cubic root of 138267776 is about 517.0989538313.

The spelling of 138267776 in words is "one hundred thirty-eight million, two hundred sixty-seven thousand, seven hundred seventy-six".