27780099 has 8 divisors (see below), whose sum is σ = 37562112. Its totient is φ = 18259080.

The previous prime is 27780097. The next prime is 27780127. The reversal of 27780099 is 99008772.

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

It is not a de Polignac number, because 27780099 - 2¹ = 27780097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27780099.

It is not an unprimeable number, because it can be changed into a prime (27780097) 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, 64999 + ... + 65424.

It is an arithmetic number, because the mean of its divisors is an integer number (4695264).

Almost surely, 2^27780099 is an apocalyptic number.

27780099 is a deficient number, since it is larger than the sum of its proper divisors (9782013).

27780099 is a wasteful number, since it uses less digits than its factorization.

27780099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130497.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 27780099 is about 5270.6829728224. The cubic root of 27780099 is about 302.8618677851.

The spelling of 27780099 in words is "twenty-seven million, seven hundred eighty thousand, ninety-nine".