28219468 has 6 divisors (see below), whose sum is σ = 49384076. Its totient is φ = 14109732.

The previous prime is 28219463. The next prime is 28219487. The reversal of 28219468 is 86491282.

It is a self number, because there is not a number n which added to its sum of digits gives 28219468.

It is not an unprimeable number, because it can be changed into a prime (28219463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3527430 + ... + 3527437.

Almost surely, 2^28219468 is an apocalyptic number.

It is an amenable number.

28219468 is a deficient number, since it is larger than the sum of its proper divisors (21164608).

28219468 is a wasteful number, since it uses less digits than its factorization.

28219468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7054871 (or 7054869 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 28219468 is about 5312.1999209367. The cubic root of 28219468 is about 304.4502072462.

The spelling of 28219468 in words is "twenty-eight million, two hundred nineteen thousand, four hundred sixty-eight".