28423454 has 8 divisors (see below), whose sum is σ = 42657888. Its totient is φ = 14204160.

The previous prime is 28423453. The next prime is 28423457. The reversal of 28423454 is 45432482.

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 28423454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28423453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4859 + ... + 8969.

It is an arithmetic number, because the mean of its divisors is an integer number (5332236).

Almost surely, 2^28423454 is an apocalyptic number.

28423454 is a deficient number, since it is larger than the sum of its proper divisors (14234434).

28423454 is a wasteful number, since it uses less digits than its factorization.

28423454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7570.

The product of its digits is 30720, while the sum is 32.

The square root of 28423454 is about 5331.3651159905. The cubic root of 28423454 is about 305.1820251800.

Subtracting 28423454 from its reverse (45432482), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 28423454 in words is "twenty-eight million, four hundred twenty-three thousand, four hundred fifty-four".