27453972 has 96 divisors (see below), whose sum is σ = 81485824. Its totient is φ = 6998400.

The previous prime is 27453961. The next prime is 27453977. The reversal of 27453972 is 27935472.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 27453972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27453977) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 33447 + ... + 34257.

Almost surely, 2^27453972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27453972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40742912).

27453972 is an abundant number, since it is smaller than the sum of its proper divisors (54031852).

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

27453972 is a wasteful number, since it uses less digits than its factorization.

27453972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 867 counting only the distinct ones).

The product of its digits is 105840, while the sum is 39.

The square root of 27453972 is about 5239.6538053578. The cubic root of 27453972 is about 301.6720413899.

The spelling of 27453972 in words is "twenty-seven million, four hundred fifty-three thousand, nine hundred seventy-two".