28555070 has 16 divisors (see below), whose sum is σ = 54422928. Its totient is φ = 10750080.

The previous prime is 28555069. The next prime is 28555091. The reversal of 28555070 is 7055582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83816 + ... + 84155.

It is an arithmetic number, because the mean of its divisors is an integer number (3401433).

Almost surely, 2^28555070 is an apocalyptic number.

28555070 is a deficient number, since it is larger than the sum of its proper divisors (25867858).

28555070 is a wasteful number, since it uses less digits than its factorization.

28555070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167995.

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 28555070 is about 5343.6944149156. The cubic root of 28555070 is about 305.6523527055.

It can be divided in two parts, 285 and 55070, that added together give a palindrome (55355).

The spelling of 28555070 in words is "twenty-eight million, five hundred fifty-five thousand, seventy".