28485770 has 8 divisors (see below), whose sum is σ = 51274404. Its totient is φ = 11394304.

The previous prime is 28485767. The next prime is 28485773. The reversal of 28485770 is 7758482.

It is an interprime number because it is at equal distance from previous prime (28485767) and next prime (28485773).

It can be written as a sum of positive squares in 2 ways, for example, as 27321529 + 1164241 = 5227^2 + 1079^2 .

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

It is a super-2 number, since 2×28485770² = 1622878184985800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28485773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1424279 + ... + 1424298.

Almost surely, 2^28485770 is an apocalyptic number.

28485770 is a deficient number, since it is larger than the sum of its proper divisors (22788634).

28485770 is a wasteful number, since it uses less digits than its factorization.

28485770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848584.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 28485770 is about 5337.2061980028. The cubic root of 28485770 is about 305.4048909132.

The spelling of 28485770 in words is "twenty-eight million, four hundred eighty-five thousand, seven hundred seventy".