28436625 has 96 divisors (see below), whose sum is σ = 61521408. Its totient is φ = 12355200.

The previous prime is 28436623. The next prime is 28436627. The reversal of 28436625 is 52663482.

28436625 is a `hidden beast` number, since 28 + 4 + 3 + 6 + 625 = 666.

It is an interprime number because it is at equal distance from previous prime (28436623) and next prime (28436627).

It is not a de Polignac number, because 28436625 - 2¹ = 28436623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28436625.

It is not an unprimeable number, because it can be changed into a prime (28436623) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 181047 + ... + 181203.

It is an arithmetic number, because the mean of its divisors is an integer number (640848).

Almost surely, 2^28436625 is an apocalyptic number.

28436625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28436625 is an abundant number, since it is smaller than the sum of its proper divisors (33084783).

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

28436625 is a wasteful number, since it uses less digits than its factorization.

28436625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 195 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 28436625 is about 5332.6002100289. The cubic root of 28436625 is about 305.2291568170.

The spelling of 28436625 in words is "twenty-eight million, four hundred thirty-six thousand, six hundred twenty-five".