138924284 has 12 divisors (see below), whose sum is σ = 245032704. Its totient is φ = 68914944.

The previous prime is 138924281. The next prime is 138924287. The reversal of 138924284 is 482429831.

138924284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138924281) and next prime (138924287).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138924281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136229 + ... + 137244.

It is an arithmetic number, because the mean of its divisors is an integer number (20419392).

Almost surely, 2^138924284 is an apocalyptic number.

It is an amenable number.

138924284 is a deficient number, since it is larger than the sum of its proper divisors (106108420).

138924284 is a wasteful number, since it uses less digits than its factorization.

138924284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273604 (or 273602 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 138924284 is about 11786.6146114989. The cubic root of 138924284 is about 517.9160729250.

The spelling of 138924284 in words is "one hundred thirty-eight million, nine hundred twenty-four thousand, two hundred eighty-four".