138511264 has 24 divisors (see below), whose sum is σ = 273585060. Its totient is φ = 69029376.

The previous prime is 138511231. The next prime is 138511271. The reversal of 138511264 is 462115831.

It can be written as a sum of positive squares in 2 ways, for example, as 101203600 + 37307664 = 10060^2 + 6108^2 .

It is a super-3 number, since 3×138511264³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3102 + ... + 16930.

Almost surely, 2^138511264 is an apocalyptic number.

It is an amenable number.

138511264 is a deficient number, since it is larger than the sum of its proper divisors (135073796).

138511264 is a wasteful number, since it uses less digits than its factorization.

138511264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14152 (or 14144 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 138511264 is about 11769.0808477128. The cubic root of 138511264 is about 517.4023109807.

The spelling of 138511264 in words is "one hundred thirty-eight million, five hundred eleven thousand, two hundred sixty-four".