28540152 has 48 divisors (see below), whose sum is σ = 77571000. Its totient is φ = 9479616.

The previous prime is 28540121. The next prime is 28540157. The reversal of 28540152 is 25104582.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28540157) 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, 27499 + ... + 28517.

Almost surely, 2^28540152 is an apocalyptic number.

It is an amenable number.

28540152 is an abundant number, since it is smaller than the sum of its proper divisors (49030848).

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

28540152 is a wasteful number, since it uses less digits than its factorization.

28540152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420 (or 1413 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 28540152 is about 5342.2983817829. The cubic root of 28540152 is about 305.5991162041.

The spelling of 28540152 in words is "twenty-eight million, five hundred forty thousand, one hundred fifty-two".