27229920 has 192 divisors, whose sum is σ = 94058496. Its totient is φ = 6594560.

The previous prime is 27229913. The next prime is 27229963. The reversal of 27229920 is 2992272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 383485 + ... + 383555.

It is an arithmetic number, because the mean of its divisors is an integer number (489888).

Almost surely, 2^27229920 is an apocalyptic number.

27229920 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 27229920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47029248).

27229920 is an abundant number, since it is smaller than the sum of its proper divisors (66828576).

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

27229920 is a wasteful number, since it uses less digits than its factorization.

27229920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 27229920 is about 5218.2295848305. The cubic root of 27229920 is about 300.8491497701.

The spelling of 27229920 in words is "twenty-seven million, two hundred twenty-nine thousand, nine hundred twenty".