28980478 has 8 divisors (see below), whose sum is σ = 46027872. Its totient is φ = 13637856.

The previous prime is 28980463. The next prime is 28980517. The reversal of 28980478 is 87408982.

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

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, 426150 + ... + 426217.

It is an arithmetic number, because the mean of its divisors is an integer number (5753484).

Almost surely, 2^28980478 is an apocalyptic number.

28980478 is a deficient number, since it is larger than the sum of its proper divisors (17047394).

28980478 is a wasteful number, since it uses less digits than its factorization.

28980478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852386.

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 28980478 is about 5383.3519297924. The cubic root of 28980478 is about 307.1627271289.

The spelling of 28980478 in words is "twenty-eight million, nine hundred eighty thousand, four hundred seventy-eight".