28358732 has 6 divisors (see below), whose sum is σ = 49627788. Its totient is φ = 14179364.

The previous prime is 28358731. The next prime is 28358767. The reversal of 28358732 is 23785382.

It is not an unprimeable number, because it can be changed into a prime (28358731) 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 as a sum of consecutive naturals, namely, 3544838 + ... + 3544845.

It is an arithmetic number, because the mean of its divisors is an integer number (8271298).

Almost surely, 2^28358732 is an apocalyptic number.

It is an amenable number.

28358732 is a deficient number, since it is larger than the sum of its proper divisors (21269056).

28358732 is a wasteful number, since it uses less digits than its factorization.

28358732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7089687 (or 7089685 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 28358732 is about 5325.2917290980. The cubic root of 28358732 is about 304.9502095557.

The spelling of 28358732 in words is "twenty-eight million, three hundred fifty-eight thousand, seven hundred thirty-two".