28488427 has 8 divisors (see below), whose sum is σ = 31472640. Its totient is φ = 25569960.

The previous prime is 28488419. The next prime is 28488437. The reversal of 28488427 is 72488482.

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 28488427 - 2³ = 28488419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28488437) 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, 15523 + ... + 17260.

It is an arithmetic number, because the mean of its divisors is an integer number (3934080).

Almost surely, 2^28488427 is an apocalyptic number.

28488427 is a deficient number, since it is larger than the sum of its proper divisors (2984213).

28488427 is a wasteful number, since it uses less digits than its factorization.

28488427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32873.

The product of its digits is 229376, while the sum is 43.

The square root of 28488427 is about 5337.4551051976. The cubic root of 28488427 is about 305.4143861286.

The spelling of 28488427 in words is "twenty-eight million, four hundred eighty-eight thousand, four hundred twenty-seven".