139296768 has 128 divisors (see below), whose sum is σ = 403695600. Its totient is φ = 42467328.

The previous prime is 139296761. The next prime is 139296821. The reversal of 139296768 is 867692931.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 139296768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139296761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1277898 + ... + 1278006.

Almost surely, 2^139296768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139296768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201847800).

139296768 is an abundant number, since it is smaller than the sum of its proper divisors (264398832).

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

139296768 is an equidigital number, since it uses as much as digits as its factorization.

139296768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 127 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The square root of 139296768 is about 11802.4051786066. The cubic root of 139296768 is about 518.3785389683.

The spelling of 139296768 in words is "one hundred thirty-nine million, two hundred ninety-six thousand, seven hundred sixty-eight".