27998763 has 8 divisors (see below), whose sum is σ = 40203408. Its totient is φ = 17229984.

The previous prime is 27998753. The next prime is 27998767. The reversal of 27998763 is 36789972.

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

It is not a de Polignac number, because 27998763 - 2⁹ = 27998251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27998767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358920 + ... + 358997.

It is an arithmetic number, because the mean of its divisors is an integer number (5025426).

Almost surely, 2^27998763 is an apocalyptic number.

27998763 is a deficient number, since it is larger than the sum of its proper divisors (12204645).

27998763 is a wasteful number, since it uses less digits than its factorization.

27998763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717933.

The product of its digits is 1143072, while the sum is 51.

The square root of 27998763 is about 5291.3857353249. The cubic root of 27998763 is about 303.6544253830.

The spelling of 27998763 in words is "twenty-seven million, nine hundred ninety-eight thousand, seven hundred sixty-three".