28718046 has 48 divisors (see below), whose sum is σ = 71776224. Its totient is φ = 8128512.

The previous prime is 28718029. The next prime is 28718089. The reversal of 28718046 is 64081782.

It is a self number, because there is not a number n which added to its sum of digits gives 28718046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13230 + ... + 15246.

It is an arithmetic number, because the mean of its divisors is an integer number (1495338).

Almost surely, 2^28718046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28718046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35888112).

28718046 is an abundant number, since it is smaller than the sum of its proper divisors (43058178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28718046 is a wasteful number, since it uses less digits than its factorization.

28718046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145 (or 2142 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 28718046 is about 5358.9220931079. The cubic root of 28718046 is about 306.2327461611.

The spelling of 28718046 in words is "twenty-eight million, seven hundred eighteen thousand, forty-six".