28615126 has 4 divisors (see below), whose sum is σ = 42922692. Its totient is φ = 14307562.

The previous prime is 28615123. The next prime is 28615127. The reversal of 28615126 is 62151682.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28615123) 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 as a sum of consecutive naturals, namely, 7153780 + ... + 7153783.

It is an arithmetic number, because the mean of its divisors is an integer number (10730673).

Almost surely, 2^28615126 is an apocalyptic number.

28615126 is a deficient number, since it is larger than the sum of its proper divisors (14307566).

28615126 is a wasteful number, since it uses less digits than its factorization.

28615126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14307565.

The product of its digits is 5760, while the sum is 31.

The square root of 28615126 is about 5349.3107967289. The cubic root of 28615126 is about 305.8664816846.

The spelling of 28615126 in words is "twenty-eight million, six hundred fifteen thousand, one hundred twenty-six".