138104724 has 12 divisors (see below), whose sum is σ = 322244384. Its totient is φ = 46034904.

The previous prime is 138104723. The next prime is 138104741. The reversal of 138104724 is 427401831.

138104724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×138104724² = 38145829582232352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138104691 and 138104700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138104723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5754352 + ... + 5754375.

Almost surely, 2^138104724 is an apocalyptic number.

It is an amenable number.

138104724 is an abundant number, since it is smaller than the sum of its proper divisors (184139660).

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

138104724 is a wasteful number, since it uses less digits than its factorization.

138104724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11508734 (or 11508732 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 138104724 is about 11751.7966286011. The cubic root of 138104724 is about 516.8956112421.

The spelling of 138104724 in words is "one hundred thirty-eight million, one hundred four thousand, seven hundred twenty-four".