28488619 has 8 divisors (see below), whose sum is σ = 30101840. Its totient is φ = 26886816.

The previous prime is 28488611. The next prime is 28488637. The reversal of 28488619 is 91688482.

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 28488619 - 2³ = 28488611 is a prime.

It is a super-2 number, since 2×28488619² = 1623202825054322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28488611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2557 + ... + 7969.

It is an arithmetic number, because the mean of its divisors is an integer number (3762730).

Almost surely, 2^28488619 is an apocalyptic number.

28488619 is a deficient number, since it is larger than the sum of its proper divisors (1613221).

28488619 is a wasteful number, since it uses less digits than its factorization.

28488619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709.

The product of its digits is 221184, while the sum is 46.

The square root of 28488619 is about 5337.4730912671. The cubic root of 28488619 is about 305.4150722485.

The spelling of 28488619 in words is "twenty-eight million, four hundred eighty-eight thousand, six hundred nineteen".