28240124 has 12 divisors (see below), whose sum is σ = 53913048. Its totient is φ = 12836400.

The previous prime is 28240117. The next prime is 28240153. The reversal of 28240124 is 42104282.

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 28240124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320867 + ... + 320954.

It is an arithmetic number, because the mean of its divisors is an integer number (4492754).

Almost surely, 2^28240124 is an apocalyptic number.

It is an amenable number.

28240124 is a deficient number, since it is larger than the sum of its proper divisors (25672924).

28240124 is a wasteful number, since it uses less digits than its factorization.

28240124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641836 (or 641834 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 28240124 is about 5314.1437692257. The cubic root of 28240124 is about 304.5244726399.

The spelling of 28240124 in words is "twenty-eight million, two hundred forty thousand, one hundred twenty-four".