138550760 has 16 divisors (see below), whose sum is σ = 311739300. Its totient is φ = 55420288.

The previous prime is 138550751. The next prime is 138550771. The reversal of 138550760 is 67055831.

It can be written as a sum of positive squares in 2 ways, for example, as 138344644 + 206116 = 11762^2 + 454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 138550760.

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, 1731845 + ... + 1731924.

Almost surely, 2^138550760 is an apocalyptic number.

138550760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138550760 is an abundant number, since it is smaller than the sum of its proper divisors (173188540).

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

138550760 is a wasteful number, since it uses less digits than its factorization.

138550760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463780 (or 3463776 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 138550760 is about 11770.7586841291. The cubic root of 138550760 is about 517.4514847904.

The spelling of 138550760 in words is "one hundred thirty-eight million, five hundred fifty thousand, seven hundred sixty".