28398454 has 8 divisors (see below), whose sum is σ = 48683088. Its totient is φ = 12170760.

The previous prime is 28398443. The next prime is 28398467. The reversal of 28398454 is 45489382.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28398454.

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, 1014217 + ... + 1014244.

It is an arithmetic number, because the mean of its divisors is an integer number (6085386).

Almost surely, 2^28398454 is an apocalyptic number.

28398454 is a deficient number, since it is larger than the sum of its proper divisors (20284634).

28398454 is a wasteful number, since it uses less digits than its factorization.

28398454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028470.

The product of its digits is 276480, while the sum is 43.

The square root of 28398454 is about 5329.0199849503. The cubic root of 28398454 is about 305.0925241106.

The spelling of 28398454 in words is "twenty-eight million, three hundred ninety-eight thousand, four hundred fifty-four".