28837427 has 4 divisors (see below), whose sum is σ = 28923336. Its totient is φ = 28751520.

The previous prime is 28837411. The next prime is 28837429. The reversal of 28837427 is 72473882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28837427 - 2⁴ = 28837411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28837429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42449 + ... + 43122.

It is an arithmetic number, because the mean of its divisors is an integer number (7230834).

Almost surely, 2^28837427 is an apocalyptic number.

28837427 is a deficient number, since it is larger than the sum of its proper divisors (85909).

28837427 is an equidigital number, since it uses as much as digits as its factorization.

28837427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85908.

The product of its digits is 150528, while the sum is 41.

The square root of 28837427 is about 5370.0490686771. The cubic root of 28837427 is about 306.6564963283.

The spelling of 28837427 in words is "twenty-eight million, eight hundred thirty-seven thousand, four hundred twenty-seven".