28370770 has 16 divisors (see below), whose sum is σ = 52313688. Its totient is φ = 11071360.

The previous prime is 28370767. The next prime is 28370777. The reversal of 28370770 is 7707382.

It can be written as a sum of positive squares in 4 ways, for example, as 21150801 + 7219969 = 4599^2 + 2687^2 .

It is not an unprimeable number, because it can be changed into a prime (28370777) 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 7 ways as a sum of consecutive naturals, for example, 34189 + ... + 35008.

Almost surely, 2^28370770 is an apocalyptic number.

28370770 is a deficient number, since it is larger than the sum of its proper divisors (23942918).

28370770 is a wasteful number, since it uses less digits than its factorization.

28370770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69245.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 28370770 is about 5326.4218758938. The cubic root of 28370770 is about 304.9933528964.

The spelling of 28370770 in words is "twenty-eight million, three hundred seventy thousand, seven hundred seventy".