27472005 has 96 divisors (see below), whose sum is σ = 57507840. Its totient is φ = 11975040.

The previous prime is 27471991. The next prime is 27472037. The reversal of 27472005 is 50027472.

It is not a de Polignac number, because 27472005 - 2⁸ = 27471749 is a prime.

It is a super-2 number, since 2×27472005² = 1509422117440050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27472005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 216252 + ... + 216378.

It is an arithmetic number, because the mean of its divisors is an integer number (599040).

Almost surely, 2^27472005 is an apocalyptic number.

It is an amenable number.

27472005 is an abundant number, since it is smaller than the sum of its proper divisors (30035835).

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

27472005 is a wasteful number, since it uses less digits than its factorization.

27472005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 27472005 is about 5241.3743426701. The cubic root of 27472005 is about 301.7380775086.

Adding to 27472005 its reverse (50027472), we get a palindrome (77499477).

The spelling of 27472005 in words is "twenty-seven million, four hundred seventy-two thousand, five".