28145853 has 8 divisors (see below), whose sum is σ = 41697600. Its totient is φ = 18763884.

The previous prime is 28145849. The next prime is 28145879. The reversal of 28145853 is 35854182.

It is a happy number.

It is not a de Polignac number, because 28145853 - 2² = 28145849 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28145833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521193 + ... + 521246.

It is an arithmetic number, because the mean of its divisors is an integer number (5212200).

Almost surely, 2^28145853 is an apocalyptic number.

It is an amenable number.

28145853 is a deficient number, since it is larger than the sum of its proper divisors (13551747).

28145853 is a wasteful number, since it uses less digits than its factorization.

28145853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042448 (or 1042442 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 28145853 is about 5305.2665343034. The cubic root of 28145853 is about 304.1852410083.

The spelling of 28145853 in words is "twenty-eight million, one hundred forty-five thousand, eight hundred fifty-three".