28052404 has 12 divisors (see below), whose sum is σ = 49551264. Its totient is φ = 13894904.

The previous prime is 28052393. The next prime is 28052407. The reversal of 28052404 is 40425082.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28052407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32344 + ... + 33199.

It is an arithmetic number, because the mean of its divisors is an integer number (4129272).

Almost surely, 2^28052404 is an apocalyptic number.

It is an amenable number.

28052404 is a deficient number, since it is larger than the sum of its proper divisors (21498860).

28052404 is a wasteful number, since it uses less digits than its factorization.

28052404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65654 (or 65652 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 28052404 is about 5296.4520199847. The cubic root of 28052404 is about 303.8482188989.

Adding to 28052404 its reverse (40425082), we get a palindrome (68477486).

The spelling of 28052404 in words is "twenty-eight million, fifty-two thousand, four hundred four".