27287949 has 16 divisors (see below), whose sum is σ = 39312000. Its totient is φ = 16737216.

The previous prime is 27287947. The next prime is 27287963. The reversal of 27287949 is 94978272.

It is not a de Polignac number, because 27287949 - 2¹ = 27287947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27287898 and 27287907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27287947) 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, 13027 + ... + 14975.

It is an arithmetic number, because the mean of its divisors is an integer number (2457000).

Almost surely, 2^27287949 is an apocalyptic number.

It is an amenable number.

27287949 is a deficient number, since it is larger than the sum of its proper divisors (12024051).

27287949 is a wasteful number, since it uses less digits than its factorization.

27287949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324.

The product of its digits is 508032, while the sum is 48.

The square root of 27287949 is about 5223.7868448090. The cubic root of 27287949 is about 301.0627088325.

The spelling of 27287949 in words is "twenty-seven million, two hundred eighty-seven thousand, nine hundred forty-nine".