28527040 has 56 divisors (see below), whose sum is σ = 68397120. Its totient is φ = 11332608.

The previous prime is 28527011. The next prime is 28527041. The reversal of 28527040 is 4072582.

It is a super-2 number, since 2×28527040² = 1627584022323200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28527041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76294 + ... + 76666.

Almost surely, 2^28527040 is an apocalyptic number.

28527040 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 28527040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34198560).

28527040 is an abundant number, since it is smaller than the sum of its proper divisors (39870080).

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

28527040 is a wasteful number, since it uses less digits than its factorization.

28527040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 28527040 is about 5341.0710536371. The cubic root of 28527040 is about 305.5523092890.

The spelling of 28527040 in words is "twenty-eight million, five hundred twenty-seven thousand, forty".