27139830 has 16 divisors (see below), whose sum is σ = 65135664. Its totient is φ = 7237280.

The previous prime is 27139817. The next prime is 27139841. The reversal of 27139830 is 3893172.

It is a junction number, because it is equal to n+sod(n) for n = 27139791 and 27139800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452301 + ... + 452360.

It is an arithmetic number, because the mean of its divisors is an integer number (4070979).

Almost surely, 2^27139830 is an apocalyptic number.

27139830 is an abundant number, since it is smaller than the sum of its proper divisors (37995834).

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

27139830 is a wasteful number, since it uses less digits than its factorization.

27139830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904671.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 27139830 is about 5209.5901950153. The cubic root of 27139830 is about 300.5169974226.

The spelling of 27139830 in words is "twenty-seven million, one hundred thirty-nine thousand, eight hundred thirty".