138460064 has 12 divisors (see below), whose sum is σ = 272593314. Its totient is φ = 69230016.

The previous prime is 138460051. The next prime is 138460081. The reversal of 138460064 is 460064831.

It can be written as a sum of positive squares in only one way, i.e., 132250000 + 6210064 = 11500^2 + 2492^2 .

It is a super-3 number, since 3×138460064³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 4326877 = 138460064 / (1 + 3 + 8 + 4 + 6 + 0 + 0 + 6 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 138460064.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2163407 + ... + 2163470.

Almost surely, 2^138460064 is an apocalyptic number.

It is an amenable number.

138460064 is a deficient number, since it is larger than the sum of its proper divisors (134133250).

138460064 is an equidigital number, since it uses as much as digits as its factorization.

138460064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4326887 (or 4326879 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 138460064 is about 11766.9054555563. The cubic root of 138460064 is about 517.3385513934.

The spelling of 138460064 in words is "one hundred thirty-eight million, four hundred sixty thousand, sixty-four".