27450720 has 144 divisors (see below), whose sum is σ = 102250512. Its totient is φ = 6650880.

The previous prime is 27450719. The next prime is 27450721. The reversal of 27450720 is 2705472.

It is an interprime number because it is at equal distance from previous prime (27450719) and next prime (27450721).

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27450721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14974 + ... + 16706.

It is an arithmetic number, because the mean of its divisors is an integer number (710073).

Almost surely, 2^27450720 is an apocalyptic number.

27450720 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 27450720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51125256).

27450720 is an abundant number, since it is smaller than the sum of its proper divisors (74799792).

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

27450720 is a wasteful number, since it uses less digits than its factorization.

27450720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765 (or 1754 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 27450720 is about 5239.3434703214. The cubic root of 27450720 is about 301.6601296197.

The spelling of 27450720 in words is "twenty-seven million, four hundred fifty thousand, seven hundred twenty".