28513862 has 32 divisors (see below), whose sum is σ = 50367744. Its totient is φ = 11980800.

The previous prime is 28513861. The next prime is 28513867. The reversal of 28513862 is 26831582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28513861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12662 + ... + 14742.

It is an arithmetic number, because the mean of its divisors is an integer number (1573992).

Almost surely, 2^28513862 is an apocalyptic number.

28513862 is a deficient number, since it is larger than the sum of its proper divisors (21853882).

28513862 is a wasteful number, since it uses less digits than its factorization.

28513862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144.

The product of its digits is 23040, while the sum is 35.

The square root of 28513862 is about 5339.8372634379. The cubic root of 28513862 is about 305.5052523154.

The spelling of 28513862 in words is "twenty-eight million, five hundred thirteen thousand, eight hundred sixty-two".