28128010 has 8 divisors (see below), whose sum is σ = 50630436. Its totient is φ = 11251200.

The previous prime is 28127987. The next prime is 28128017. The reversal of 28128010 is 1082182.

It can be written as a sum of positive squares in 2 ways, for example, as 27783441 + 344569 = 5271^2 + 587^2 .

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 (28128017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1406391 + ... + 1406410.

Almost surely, 2^28128010 is an apocalyptic number.

28128010 is a deficient number, since it is larger than the sum of its proper divisors (22502426).

28128010 is a wasteful number, since it uses less digits than its factorization.

28128010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812808.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 28128010 is about 5303.5846368282. The cubic root of 28128010 is about 304.1209482379.

The spelling of 28128010 in words is "twenty-eight million, one hundred twenty-eight thousand, ten".