27952369 has 9 divisors (see below), whose sum is σ = 29789131. Its totient is φ = 26223520.

The previous prime is 27952367. The next prime is 27952391. The reversal of 27952369 is 96325972.

The square root of 27952369 is 5287.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 21762225 + 6190144 = 4665^2 + 2488^2 .

It is not a de Polignac number, because 27952369 - 2¹ = 27952367 is a prime.

It is a super-2 number, since 2×27952369² = 1562669865424322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27952367) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 89724 + ... + 90034.

Almost surely, 2^27952369 is an apocalyptic number.

27952369 is the 5287-th square number.

27952369 is the 2644-th centered octagonal number.

It is an amenable number.

27952369 is a deficient number, since it is larger than the sum of its proper divisors (1836762).

27952369 is an frugal number, since it uses more digits than its factorization.

27952369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 328 counting only the distinct ones).

The product of its digits is 204120, while the sum is 43.

The cubic root of 27952369 is about 303.4866140202.

The spelling of 27952369 in words is "twenty-seven million, nine hundred fifty-two thousand, three hundred sixty-nine".