27981154 has 8 divisors (see below), whose sum is σ = 42278508. Its totient is φ = 13888320.

The previous prime is 27981131. The next prime is 27981169. The reversal of 27981154 is 45118972.

It can be written as a sum of positive squares in 2 ways, for example, as 25775929 + 2205225 = 5077^2 + 1485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 50787 + ... + 51334.

Almost surely, 2^27981154 is an apocalyptic number.

27981154 is a deficient number, since it is larger than the sum of its proper divisors (14297354).

27981154 is a wasteful number, since it uses less digits than its factorization.

27981154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102260.

The product of its digits is 20160, while the sum is 37.

The square root of 27981154 is about 5289.7215427657. The cubic root of 27981154 is about 303.5907538543.

The spelling of 27981154 in words is "twenty-seven million, nine hundred eighty-one thousand, one hundred fifty-four".