27021006 has 16 divisors (see below), whose sum is σ = 60046800. Its totient is φ = 9006984.

The previous prime is 27020993. The next prime is 27021017. The reversal of 27021006 is 60012072.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 27021006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250141 + ... + 250248.

It is an arithmetic number, because the mean of its divisors is an integer number (3752925).

Almost surely, 2^27021006 is an apocalyptic number.

27021006 is an abundant number, since it is smaller than the sum of its proper divisors (33025794).

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

27021006 is a wasteful number, since it uses less digits than its factorization.

27021006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500400 (or 500394 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 27021006 is about 5198.1733330084. The cubic root of 27021006 is about 300.0777798326.

Adding to 27021006 its reverse (60012072), we get a palindrome (87033078).

The spelling of 27021006 in words is "twenty-seven million, twenty-one thousand, six".