28225454 has 8 divisors (see below), whose sum is σ = 42364560. Its totient is φ = 14103936.

The previous prime is 28225447. The next prime is 28225489. The reversal of 28225454 is 45452282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28225454² = 1593352507012232, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28225454.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 887 + ... + 7565.

It is an arithmetic number, because the mean of its divisors is an integer number (5295570).

Almost surely, 2^28225454 is an apocalyptic number.

28225454 is a deficient number, since it is larger than the sum of its proper divisors (14139106).

28225454 is a wasteful number, since it uses less digits than its factorization.

28225454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8794.

The product of its digits is 25600, while the sum is 32.

The square root of 28225454 is about 5312.7633111216. The cubic root of 28225454 is about 304.4717326945.

The spelling of 28225454 in words is "twenty-eight million, two hundred twenty-five thousand, four hundred fifty-four".