28716130 has 8 divisors (see below), whose sum is σ = 51689052. Its totient is φ = 11486448.

The previous prime is 28716101. The next prime is 28716139. The reversal of 28716130 is 3161782.

It can be written as a sum of positive squares in 2 ways, for example, as 28611801 + 104329 = 5349^2 + 323^2 .

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

It is a super-2 number, since 2×28716130² = 1649232244353800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28716139) 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, 1435797 + ... + 1435816.

Almost surely, 2^28716130 is an apocalyptic number.

28716130 is a deficient number, since it is larger than the sum of its proper divisors (22972922).

28716130 is a wasteful number, since it uses less digits than its factorization.

28716130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871620.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 28716130 is about 5358.7433228323. The cubic root of 28716130 is about 306.2259356352.

The spelling of 28716130 in words is "twenty-eight million, seven hundred sixteen thousand, one hundred thirty".