27697432 has 64 divisors (see below), whose sum is σ = 61689600. Its totient is φ = 11414400.

The previous prime is 27697393. The next prime is 27697447. The reversal of 27697432 is 23479672.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

Its product of digits (127008) is a multiple of the sum of its prime divisors (252).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274182 + ... + 274282.

It is an arithmetic number, because the mean of its divisors is an integer number (963900).

Almost surely, 2^27697432 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 27697432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30844800).

27697432 is an abundant number, since it is smaller than the sum of its proper divisors (33992168).

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

27697432 is a wasteful number, since it uses less digits than its factorization.

27697432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 252 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The square root of 27697432 is about 5262.8349774622. The cubic root of 27697432 is about 302.5611542230.

It can be divided in two parts, 2769 and 7432, that added together give a palindrome (10201).

The spelling of 27697432 in words is "twenty-seven million, six hundred ninety-seven thousand, four hundred thirty-two".