28145710 has 24 divisors (see below), whose sum is σ = 53823240. Its totient is φ = 10594944.

The previous prime is 28145687. The next prime is 28145717. The reversal of 28145710 is 1754182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28145717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1980 + ... + 7759.

It is an arithmetic number, because the mean of its divisors is an integer number (2242635).

Almost surely, 2^28145710 is an apocalyptic number.

28145710 is a deficient number, since it is larger than the sum of its proper divisors (25677530).

28145710 is a wasteful number, since it uses less digits than its factorization.

28145710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9780 (or 9763 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 28145710 is about 5305.2530571124. The cubic root of 28145710 is about 304.1847258517.

Adding to 28145710 its reverse (1754182), we get a palindrome (29899892).

The spelling of 28145710 in words is "twenty-eight million, one hundred forty-five thousand, seven hundred ten".