27200421 has 16 divisors (see below), whose sum is σ = 42049920. Its totient is φ = 17344800.

The previous prime is 27200417. The next prime is 27200431. The reversal of 27200421 is 12400272.

It is not a de Polignac number, because 27200421 - 2² = 27200417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27200394 and 27200403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27200401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21280 + ... + 22521.

It is an arithmetic number, because the mean of its divisors is an integer number (2628120).

Almost surely, 2^27200421 is an apocalyptic number.

It is an amenable number.

27200421 is a deficient number, since it is larger than the sum of its proper divisors (14849499).

27200421 is a wasteful number, since it uses less digits than its factorization.

27200421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43833 (or 43827 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 27200421 is about 5215.4022855385. The cubic root of 27200421 is about 300.7404708394.

Adding to 27200421 its reverse (12400272), we get a palindrome (39600693).

The spelling of 27200421 in words is "twenty-seven million, two hundred thousand, four hundred twenty-one".