27533040 has 80 divisors (see below), whose sum is σ = 86378400. Its totient is φ = 7254016.

The previous prime is 27532993. The next prime is 27533041. The reversal of 27533040 is 4033572.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 27533040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27533041) 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, 20716 + ... + 22004.

It is an arithmetic number, because the mean of its divisors is an integer number (1079730).

Almost surely, 2^27533040 is an apocalyptic number.

27533040 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 27533040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43189200).

27533040 is an abundant number, since it is smaller than the sum of its proper divisors (58845360).

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

27533040 is a wasteful number, since it uses less digits than its factorization.

27533040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1388 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 27533040 is about 5247.1935355960. The cubic root of 27533040 is about 301.9613710222.

The spelling of 27533040 in words is "twenty-seven million, five hundred thirty-three thousand, forty".