28654478 has 16 divisors (see below), whose sum is σ = 44499840. Its totient is φ = 13824000.

The previous prime is 28654477. The next prime is 28654487. The reversal of 28654478 is 87445682.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28654477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36878 + ... + 37646.

It is an arithmetic number, because the mean of its divisors is an integer number (2781240).

Almost surely, 2^28654478 is an apocalyptic number.

28654478 is a deficient number, since it is larger than the sum of its proper divisors (15845362).

28654478 is a wasteful number, since it uses less digits than its factorization.

28654478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403.

The product of its digits is 430080, while the sum is 44.

The square root of 28654478 is about 5352.9877638567. The cubic root of 28654478 is about 306.0066283611.

The spelling of 28654478 in words is "twenty-eight million, six hundred fifty-four thousand, four hundred seventy-eight".