28241816 has 8 divisors (see below), whose sum is σ = 52953420. Its totient is φ = 14120904.

The previous prime is 28241813. The next prime is 28241821. The reversal of 28241816 is 61814282.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28241813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1765106 + ... + 1765121.

Almost surely, 2^28241816 is an apocalyptic number.

It is an amenable number.

28241816 is a deficient number, since it is larger than the sum of its proper divisors (24711604).

28241816 is a wasteful number, since it uses less digits than its factorization.

28241816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530233 (or 3530229 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 28241816 is about 5314.3029646417. The cubic root of 28241816 is about 304.5305543545.

The spelling of 28241816 in words is "twenty-eight million, two hundred forty-one thousand, eight hundred sixteen".