27780058 has 4 divisors (see below), whose sum is σ = 41670090. Its totient is φ = 13890028.

The previous prime is 27780047. The next prime is 27780073. The reversal of 27780058 is 85008772.

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., 16104169 + 11675889 = 4013^2 + 3417^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27779999 and 27780026.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6945013 + ... + 6945016.

Almost surely, 2^27780058 is an apocalyptic number.

27780058 is a deficient number, since it is larger than the sum of its proper divisors (13890032).

27780058 is a wasteful number, since it uses less digits than its factorization.

27780058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13890031.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 27780058 is about 5270.6790833820. The cubic root of 27780058 is about 302.8617187895.

The spelling of 27780058 in words is "twenty-seven million, seven hundred eighty thousand, fifty-eight".