138753284 has 24 divisors (see below), whose sum is σ = 255322200. Its totient is φ = 65882880.

The previous prime is 138753281. The next prime is 138753343. The reversal of 138753284 is 482357831.

It can be written as a sum of positive squares in 4 ways, for example, as 28922884 + 109830400 = 5378^2 + 10480^2 .

It is not an unprimeable number, because it can be changed into a prime (138753281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2729 + ... + 16880.

It is an arithmetic number, because the mean of its divisors is an integer number (10638425).

Almost surely, 2^138753284 is an apocalyptic number.

It is an amenable number.

138753284 is a deficient number, since it is larger than the sum of its proper divisors (116568916).

138753284 is a wasteful number, since it uses less digits than its factorization.

138753284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19703 (or 19701 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 138753284 is about 11779.3583866015. The cubic root of 138753284 is about 517.7034870760.

The spelling of 138753284 in words is "one hundred thirty-eight million, seven hundred fifty-three thousand, two hundred eighty-four".