27472020 has 72 divisors (see below), whose sum is σ = 78881376. Its totient is φ = 7143552.

The previous prime is 27471991. The next prime is 27472037. The reversal of 27472020 is 2027472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168459 + ... + 168621.

Almost surely, 2^27472020 is an apocalyptic number.

27472020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27472020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39440688).

27472020 is an abundant number, since it is smaller than the sum of its proper divisors (51409356).

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

27472020 is a wasteful number, since it uses less digits than its factorization.

27472020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 27472020 is about 5241.3757735923. The cubic root of 27472020 is about 301.7381324260.

Adding to 27472020 its reverse (2027472), we get a palindrome (29499492).

The spelling of 27472020 in words is "twenty-seven million, four hundred seventy-two thousand, twenty".