139302738 has 24 divisors (see below), whose sum is σ = 303007068. Its totient is φ = 46252032.

The previous prime is 139302727. The next prime is 139302739. The reversal of 139302738 is 837203931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 96177249 + 43125489 = 9807^2 + 6567^2 .

It is not an unprimeable number, because it can be changed into a prime (139302739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10431 + ... + 19682.

Almost surely, 2^139302738 is an apocalyptic number.

139302738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

139302738 is an abundant number, since it is smaller than the sum of its proper divisors (163704330).

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

139302738 is a wasteful number, since it uses less digits than its factorization.

139302738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30378 (or 30375 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 139302738 is about 11802.6580904473. The cubic root of 139302738 is about 518.3859444420.

The spelling of 139302738 in words is "one hundred thirty-nine million, three hundred two thousand, seven hundred thirty-eight".