27528372 has 72 divisors (see below), whose sum is σ = 76108032. Its totient is φ = 8352000.

The previous prime is 27528367. The next prime is 27528379. The reversal of 27528372 is 27382572.

It is a happy number.

It is a super-2 number, since 2×27528372² = 1515622529940768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27528379) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18247 + ... + 19697.

It is an arithmetic number, because the mean of its divisors is an integer number (1057056).

Almost surely, 2^27528372 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 27528372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38054016).

27528372 is an abundant number, since it is smaller than the sum of its proper divisors (48579660).

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

27528372 is a wasteful number, since it uses less digits than its factorization.

27528372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509 (or 1504 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 27528372 is about 5246.7487075331. The cubic root of 27528372 is about 301.9443050372.

The spelling of 27528372 in words is "twenty-seven million, five hundred twenty-eight thousand, three hundred seventy-two".