28529770 has 8 divisors (see below), whose sum is σ = 51353604. Its totient is φ = 11411904.

The previous prime is 28529747. The next prime is 28529777. The reversal of 28529770 is 7792582.

It can be written as a sum of positive squares in 2 ways, for example, as 25836889 + 2692881 = 5083^2 + 1641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28529777) 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 3 ways as a sum of consecutive naturals, for example, 1426479 + ... + 1426498.

Almost surely, 2^28529770 is an apocalyptic number.

28529770 is a deficient number, since it is larger than the sum of its proper divisors (22823834).

28529770 is a wasteful number, since it uses less digits than its factorization.

28529770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852984.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 28529770 is about 5341.3266142411. The cubic root of 28529770 is about 305.5620559621.

The spelling of 28529770 in words is "twenty-eight million, five hundred twenty-nine thousand, seven hundred seventy".