27427420 has 24 divisors (see below), whose sum is σ = 57937824. Its totient is φ = 10906176.

The previous prime is 27427399. The next prime is 27427427. The reversal of 27427420 is 2472472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27427427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504 + ... + 7423.

It is an arithmetic number, because the mean of its divisors is an integer number (2414076).

Almost surely, 2^27427420 is an apocalyptic number.

27427420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27427420 is an abundant number, since it is smaller than the sum of its proper divisors (30510404).

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

27427420 is a wasteful number, since it uses less digits than its factorization.

27427420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8109 (or 8107 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 27427420 is about 5237.1194372479. The cubic root of 27427420 is about 301.5747563812.

Adding to 27427420 its reverse (2472472), we get a palindrome (29899892).

The spelling of 27427420 in words is "twenty-seven million, four hundred twenty-seven thousand, four hundred twenty".