28919366 has 8 divisors (see below), whose sum is σ = 49576080. Its totient is φ = 12394008.

The previous prime is 28919353. The next prime is 28919377. The reversal of 28919366 is 66391982.

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, 1032821 + ... + 1032848.

It is an arithmetic number, because the mean of its divisors is an integer number (6197010).

Almost surely, 2^28919366 is an apocalyptic number.

28919366 is a deficient number, since it is larger than the sum of its proper divisors (20656714).

28919366 is a wasteful number, since it uses less digits than its factorization.

28919366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065678.

The product of its digits is 139968, while the sum is 44.

The square root of 28919366 is about 5377.6729167922. The cubic root of 28919366 is about 306.9466674465.

The spelling of 28919366 in words is "twenty-eight million, nine hundred nineteen thousand, three hundred sixty-six".