28710061 has 4 divisors (see below), whose sum is σ = 29636224. Its totient is φ = 27783900.

The previous prime is 28710053. The next prime is 28710107. The reversal of 28710061 is 16001782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16001782 = 2 ⋅8000891.

It is a cyclic number.

It is not a de Polignac number, because 28710061 - 2³ = 28710053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28710761) 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 3 ways as a sum of consecutive naturals, for example, 463035 + ... + 463096.

It is an arithmetic number, because the mean of its divisors is an integer number (7409056).

Almost surely, 2^28710061 is an apocalyptic number.

It is an amenable number.

28710061 is a deficient number, since it is larger than the sum of its proper divisors (926163).

28710061 is an equidigital number, since it uses as much as digits as its factorization.

28710061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926162.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 28710061 is about 5358.1770220850. The cubic root of 28710061 is about 306.2043610457.

The spelling of 28710061 in words is "twenty-eight million, seven hundred ten thousand, sixty-one".