27521982 has 12 divisors (see below), whose sum is σ = 59631000. Its totient is φ = 9173988.

The previous prime is 27521981. The next prime is 27522037. The reversal of 27521982 is 28912572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27521981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 764482 + ... + 764517.

It is an arithmetic number, because the mean of its divisors is an integer number (4969250).

Almost surely, 2^27521982 is an apocalyptic number.

27521982 is an abundant number, since it is smaller than the sum of its proper divisors (32109018).

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

27521982 is a wasteful number, since it uses less digits than its factorization.

27521982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529007 (or 1529004 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 27521982 is about 5246.1397236444. The cubic root of 27521982 is about 301.9209403740.

The spelling of 27521982 in words is "twenty-seven million, five hundred twenty-one thousand, nine hundred eighty-two".