27420516 has 18 divisors (see below), whose sum is σ = 69313062. Its totient is φ = 9140160.

The previous prime is 27420509. The next prime is 27420529. The reversal of 27420516 is 61502472.

It can be written as a sum of positive squares in only one way, i.e., 26936100 + 484416 = 5190^2 + 696^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 27420516.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 380805 + ... + 380876.

Almost surely, 2^27420516 is an apocalyptic number.

It is an amenable number.

27420516 is an abundant number, since it is smaller than the sum of its proper divisors (41892546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27420516 is a wasteful number, since it uses less digits than its factorization.

27420516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761691 (or 761686 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 27420516 is about 5236.4602547904. The cubic root of 27420516 is about 301.5494502358.

Adding to 27420516 its reverse (61502472), we get a palindrome (88922988).

The spelling of 27420516 in words is "twenty-seven million, four hundred twenty thousand, five hundred sixteen".