138454760 has 16 divisors (see below), whose sum is σ = 311523300. Its totient is φ = 55381888.

The previous prime is 138454753. The next prime is 138454801. The reversal of 138454760 is 67454831.

It can be written as a sum of positive squares in 2 ways, for example, as 116683204 + 21771556 = 10802^2 + 4666^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1730645 + ... + 1730724.

Almost surely, 2^138454760 is an apocalyptic number.

138454760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138454760 is an abundant number, since it is smaller than the sum of its proper divisors (173068540).

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

138454760 is a wasteful number, since it uses less digits than its factorization.

138454760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3461380 (or 3461376 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 138454760 is about 11766.6800755353. The cubic root of 138454760 is about 517.3319454002.

The spelling of 138454760 in words is "one hundred thirty-eight million, four hundred fifty-four thousand, seven hundred sixty".