28652450 has 18 divisors (see below), whose sum is σ = 53364051. Its totient is φ = 11445840.

The previous prime is 28652447. The next prime is 28652453. The reversal of 28652450 is 5425682.

It is an interprime number because it is at equal distance from previous prime (28652447) and next prime (28652453).

It can be written as a sum of positive squares in 5 ways, for example, as 13667809 + 14984641 = 3697^2 + 3871^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3785.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28652453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 37472 + ... + 38228.

Almost surely, 2^28652450 is an apocalyptic number.

28652450 is a deficient number, since it is larger than the sum of its proper divisors (24711601).

28652450 is an frugal number, since it uses more digits than its factorization.

28652450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526 (or 764 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 28652450 is about 5352.7983335822. The cubic root of 28652450 is about 305.9994090581. Note that the first 3 decimals are identical.

Multiplying 28652450 by its sum of digits (32), we get a square (916878400 = 30280²).

The spelling of 28652450 in words is "twenty-eight million, six hundred fifty-two thousand, four hundred fifty".