138034740 has 48 divisors (see below), whose sum is σ = 392277312. Its totient is φ = 36258816.

The previous prime is 138034733. The next prime is 138034777. The reversal of 138034740 is 47430831.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 138034698 and 138034707.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13149 + ... + 21188.

It is an arithmetic number, because the mean of its divisors is an integer number (8172444).

Almost surely, 2^138034740 is an apocalyptic number.

138034740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138034740 is an abundant number, since it is smaller than the sum of its proper divisors (254242572).

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

138034740 is a wasteful number, since it uses less digits than its factorization.

138034740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34416 (or 34414 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 138034740 is about 11748.8186640189. The cubic root of 138034740 is about 516.8082849158.

The spelling of 138034740 in words is "one hundred thirty-eight million, thirty-four thousand, seven hundred forty".