28672130 has 8 divisors (see below), whose sum is σ = 51609852. Its totient is φ = 11468848.

The previous prime is 28672109. The next prime is 28672139. The reversal of 28672130 is 3127682.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27678121 + 994009 = 5261^2 + 997^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28672093 and 28672102.

It is not an unprimeable number, because it can be changed into a prime (28672139) 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, 1433597 + ... + 1433616.

Almost surely, 2^28672130 is an apocalyptic number.

28672130 is a deficient number, since it is larger than the sum of its proper divisors (22937722).

28672130 is a wasteful number, since it uses less digits than its factorization.

28672130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2867220.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 28672130 is about 5354.6363088449. The cubic root of 28672130 is about 306.0694518192.

The spelling of 28672130 in words is "twenty-eight million, six hundred seventy-two thousand, one hundred thirty".