27965397 has 16 divisors (see below), whose sum is σ = 39994560. Its totient is φ = 17327232.

The previous prime is 27965387. The next prime is 27965407. The reversal of 27965397 is 79356972.

It is an interprime number because it is at equal distance from previous prime (27965387) and next prime (27965407).

It is not a de Polignac number, because 27965397 - 2⁷ = 27965269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27965347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1608 + ... + 7649.

It is an arithmetic number, because the mean of its divisors is an integer number (2499660).

Almost surely, 2^27965397 is an apocalyptic number.

It is an amenable number.

27965397 is a deficient number, since it is larger than the sum of its proper divisors (12029163).

27965397 is a wasteful number, since it uses less digits than its factorization.

27965397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9332.

The product of its digits is 714420, while the sum is 48.

The square root of 27965397 is about 5288.2319351556. The cubic root of 27965397 is about 303.5337562321.

The spelling of 27965397 in words is "twenty-seven million, nine hundred sixty-five thousand, three hundred ninety-seven".