27976481 has 4 divisors (see below), whose sum is σ = 30128532. Its totient is φ = 25824432.

The previous prime is 27976471. The next prime is 27976483. The reversal of 27976481 is 18467972.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10504081 + 17472400 = 3241^2 + 4180^2 .

It is a cyclic number.

It is not a de Polignac number, because 27976481 - 2¹⁰ = 27975457 is a prime.

It is a super-2 number, since 2×27976481² = 1565366978286722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27976483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1076006 + ... + 1076031.

It is an arithmetic number, because the mean of its divisors is an integer number (7532133).

Almost surely, 2^27976481 is an apocalyptic number.

It is an amenable number.

27976481 is a deficient number, since it is larger than the sum of its proper divisors (2152051).

27976481 is a wasteful number, since it uses less digits than its factorization.

27976481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152050.

The product of its digits is 169344, while the sum is 44.

The square root of 27976481 is about 5289.2798186521. The cubic root of 27976481 is about 303.5738524954.

The spelling of 27976481 in words is "twenty-seven million, nine hundred seventy-six thousand, four hundred eighty-one".