28746544478 has 8 divisors (see below), whose sum is σ = 43126153272. Its totient is φ = 14371160056.

The previous prime is 28746544429. The next prime is 28746544493. The reversal of 28746544478 is 87444564782.

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

It is a super-3 number, since 3×28746544478³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

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, 1039025 + ... + 1066332.

It is an arithmetic number, because the mean of its divisors is an integer number (5390769159).

Almost surely, 2^28746544478 is an apocalyptic number.

28746544478 is a deficient number, since it is larger than the sum of its proper divisors (14379608794).

28746544478 is a wasteful number, since it uses less digits than its factorization.

28746544478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112186.

The product of its digits is 48168960, while the sum is 59.

The spelling of 28746544478 in words is "twenty-eight billion, seven hundred forty-six million, five hundred forty-four thousand, four hundred seventy-eight".