139788288 has 136 divisors (see below), whose sum is σ = 419427200. Its totient is φ = 46006272.

The previous prime is 139788283. The next prime is 139788289. The reversal of 139788288 is 882887931.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (1548288) is a multiple of the sum of its prime divisors (84).

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139788281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1769433 + ... + 1769511.

Almost surely, 2^139788288 is an apocalyptic number.

139788288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139788288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209713600).

139788288 is an abundant number, since it is smaller than the sum of its proper divisors (279638912).

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

139788288 is an frugal number, since it uses more digits than its factorization.

139788288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 84 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The square root of 139788288 is about 11823.2097164856. The cubic root of 139788288 is about 518.9875368720.

The spelling of 139788288 in words is "one hundred thirty-nine million, seven hundred eighty-eight thousand, two hundred eighty-eight".