28384615 has 8 divisors (see below), whose sum is σ = 38927520. Its totient is φ = 19463712.

The previous prime is 28384597. The next prime is 28384633. The reversal of 28384615 is 51648382.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28384597) and next prime (28384633).

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

It is a cyclic number.

It is not a de Polignac number, because 28384615 - 2¹³ = 28376423 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405460 + ... + 405529.

It is an arithmetic number, because the mean of its divisors is an integer number (4865940).

Almost surely, 2^28384615 is an apocalyptic number.

28384615 is a deficient number, since it is larger than the sum of its proper divisors (10542905).

28384615 is an equidigital number, since it uses as much as digits as its factorization.

28384615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811001.

The product of its digits is 46080, while the sum is 37.

The square root of 28384615 is about 5327.7213703421. The cubic root of 28384615 is about 305.0429573106.

The spelling of 28384615 in words is "twenty-eight million, three hundred eighty-four thousand, six hundred fifteen".