138084736 has 16 divisors (see below), whose sum is σ = 275090940. Its totient is φ = 69042304.

The previous prime is 138084733. The next prime is 138084743. The reversal of 138084736 is 637480831.

It is a tau number, because it is divible by the number of its divisors (16).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138084733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539266 + ... + 539521.

Almost surely, 2^138084736 is an apocalyptic number.

138084736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138084736 is a deficient number, since it is larger than the sum of its proper divisors (137006204).

138084736 is an equidigital number, since it uses as much as digits as its factorization.

138084736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078801 (or 1078789 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 138084736 is about 11750.9461746704. The cubic root of 138084736 is about 516.8706731428.

The spelling of 138084736 in words is "one hundred thirty-eight million, eighty-four thousand, seven hundred thirty-six".