28504152 has 24 divisors (see below), whose sum is σ = 77198940. Its totient is φ = 9501360.

The previous prime is 28504111. The next prime is 28504181. The reversal of 28504152 is 25140582.

It is a happy number.

28504152 is a `hidden beast` number, since 2 + 8 + 504 + 152 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197874 + ... + 198017.

Almost surely, 2^28504152 is an apocalyptic number.

It is an amenable number.

28504152 is an abundant number, since it is smaller than the sum of its proper divisors (48694788).

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

28504152 is a wasteful number, since it uses less digits than its factorization.

28504152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395903 (or 395896 counting only the distinct ones).

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

The square root of 28504152 is about 5338.9279822826. The cubic root of 28504152 is about 305.4705698535.

The spelling of 28504152 in words is "twenty-eight million, five hundred four thousand, one hundred fifty-two".