28820046 has 8 divisors (see below), whose sum is σ = 57640104. Its totient is φ = 9606680.

The previous prime is 28820039. The next prime is 28820063. The reversal of 28820046 is 64002882.

It is a happy number.

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

28820046 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 28819995 and 28820022.

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, 2401665 + ... + 2401676.

It is an arithmetic number, because the mean of its divisors is an integer number (7205013).

Almost surely, 2^28820046 is an apocalyptic number.

28820046 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28820046 is a wasteful number, since it uses less digits than its factorization.

28820046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4803346.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 28820046 is about 5368.4304968957. The cubic root of 28820046 is about 306.5948742361.

The spelling of 28820046 in words is "twenty-eight million, eight hundred twenty thousand, forty-six".