28424468 has 6 divisors (see below), whose sum is σ = 49742826. Its totient is φ = 14212232.

The previous prime is 28424453. The next prime is 28424471. The reversal of 28424468 is 86442482.

It can be written as a sum of positive squares in only one way, i.e., 17322244 + 11102224 = 4162^2 + 3332^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3553055 + ... + 3553062.

It is an arithmetic number, because the mean of its divisors is an integer number (8290471).

Almost surely, 2^28424468 is an apocalyptic number.

It is an amenable number.

28424468 is a deficient number, since it is larger than the sum of its proper divisors (21318358).

28424468 is a wasteful number, since it uses less digits than its factorization.

28424468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7106121 (or 7106119 counting only the distinct ones).

The product of its digits is 98304, while the sum is 38.

The square root of 28424468 is about 5331.4602127372. The cubic root of 28424468 is about 305.1856542358.

The spelling of 28424468 in words is "twenty-eight million, four hundred twenty-four thousand, four hundred sixty-eight".