27042450 has 48 divisors (see below), whose sum is σ = 67599840. Its totient is φ = 7153920.

The previous prime is 27042419. The next prime is 27042467. The reversal of 27042450 is 5424072.

It is a self number, because there is not a number n which added to its sum of digits gives 27042450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20202 + ... + 21498.

It is an arithmetic number, because the mean of its divisors is an integer number (1408330).

Almost surely, 2^27042450 is an apocalyptic number.

27042450 is the 2780-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27042450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33799920).

27042450 is an abundant number, since it is smaller than the sum of its proper divisors (40557390).

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

27042450 is a wasteful number, since it uses less digits than its factorization.

27042450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451 (or 1446 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 27042450 is about 5200.2355715871. The cubic root of 27042450 is about 300.1571398980.

The spelling of 27042450 in words is "twenty-seven million, forty-two thousand, four hundred fifty".