27223420 has 36 divisors (see below), whose sum is σ = 66505320. Its totient is φ = 9333408.

The previous prime is 27223411. The next prime is 27223423. The reversal of 27223420 is 2432272.

It is a super-2 number, since 2×27223420² = 1482229192992800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27223391 and 27223400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27223423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12910 + ... + 14869.

It is an arithmetic number, because the mean of its divisors is an integer number (1847370).

Almost surely, 2^27223420 is an apocalyptic number.

27223420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27223420 is an abundant number, since it is smaller than the sum of its proper divisors (39281900).

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

27223420 is a wasteful number, since it uses less digits than its factorization.

27223420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27802 (or 27793 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 27223420 is about 5217.6067310597. The cubic root of 27223420 is about 300.8252094978.

Adding to 27223420 its reverse (2432272), we get a palindrome (29655692).

The spelling of 27223420 in words is "twenty-seven million, two hundred twenty-three thousand, four hundred twenty".