27139738 has 4 divisors (see below), whose sum is σ = 40709610. Its totient is φ = 13569868.

The previous prime is 27139729. The next prime is 27139741. The reversal of 27139738 is 83793172.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24970009 + 2169729 = 4997^2 + 1473^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27139738.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6784933 + ... + 6784936.

Almost surely, 2^27139738 is an apocalyptic number.

27139738 is a deficient number, since it is larger than the sum of its proper divisors (13569872).

27139738 is a wasteful number, since it uses less digits than its factorization.

27139738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13569871.

The product of its digits is 63504, while the sum is 40.

The square root of 27139738 is about 5209.5813651387. The cubic root of 27139738 is about 300.5166578529.

The spelling of 27139738 in words is "twenty-seven million, one hundred thirty-nine thousand, seven hundred thirty-eight".