27212240 has 120 divisors (see below), whose sum is σ = 74004192. Its totient is φ = 9226240.

The previous prime is 27212239. The next prime is 27212281. The reversal of 27212240 is 4221272.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 254267 + ... + 254373.

Almost surely, 2^27212240 is an apocalyptic number.

27212240 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 27212240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37002096).

27212240 is an abundant number, since it is smaller than the sum of its proper divisors (46791952).

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

27212240 is a wasteful number, since it uses less digits than its factorization.

27212240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 27212240 is about 5216.5352486109. The cubic root of 27212240 is about 300.7840233139.

The spelling of 27212240 in words is "twenty-seven million, two hundred twelve thousand, two hundred forty".