28053912 has 32 divisors (see below), whose sum is σ = 70678080. Its totient is φ = 9278880.

The previous prime is 28053887. The next prime is 28053913. The reversal of 28053912 is 21935082.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28053912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28053913) 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, 1318 + ... + 7605.

It is an arithmetic number, because the mean of its divisors is an integer number (2208690).

Almost surely, 2^28053912 is an apocalyptic number.

It is an amenable number.

28053912 is an abundant number, since it is smaller than the sum of its proper divisors (42624168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28053912 is a wasteful number, since it uses less digits than its factorization.

28053912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9063 (or 9059 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 28053912 is about 5296.5943775222. The cubic root of 28053912 is about 303.8536634104.

Adding to 28053912 its reverse (21935082), we get a palindrome (49988994).

The spelling of 28053912 in words is "twenty-eight million, fifty-three thousand, nine hundred twelve".