27773172 has 96 divisors (see below), whose sum is σ = 87171840. Its totient is φ = 7464960.

The previous prime is 27773171. The next prime is 27773201. The reversal of 27773172 is 27137772.

27773172 is nontrivially palindromic in base 5.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27773171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11772 + ... + 13932.

It is an arithmetic number, because the mean of its divisors is an integer number (908040).

Almost surely, 2^27773172 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 27773172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43585920).

27773172 is an abundant number, since it is smaller than the sum of its proper divisors (59398668).

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

27773172 is a wasteful number, since it uses less digits than its factorization.

27773172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198 (or 2190 counting only the distinct ones).

The product of its digits is 28812, while the sum is 36.

The square root of 27773172 is about 5270.0258063884. The cubic root of 27773172 is about 302.8366927062.

The spelling of 27773172 in words is "twenty-seven million, seven hundred seventy-three thousand, one hundred seventy-two".