28619547 has 8 divisors (see below), whose sum is σ = 41628480. Its totient is φ = 17345160.

The previous prime is 28619531. The next prime is 28619557. The reversal of 28619547 is 74591682.

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

It is not a de Polignac number, because 28619547 - 2⁴ = 28619531 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 28619499 and 28619508.

It is not an unprimeable number, because it can be changed into a prime (28619527) 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, 433597 + ... + 433662.

It is an arithmetic number, because the mean of its divisors is an integer number (5203560).

Almost surely, 2^28619547 is an apocalyptic number.

28619547 is a deficient number, since it is larger than the sum of its proper divisors (13008933).

28619547 is a wasteful number, since it uses less digits than its factorization.

28619547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867273.

The product of its digits is 120960, while the sum is 42.

The square root of 28619547 is about 5349.7240115729. The cubic root of 28619547 is about 305.8822328656.

The spelling of 28619547 in words is "twenty-eight million, six hundred nineteen thousand, five hundred forty-seven".