28388462 has 4 divisors (see below), whose sum is σ = 42582696. Its totient is φ = 14194230.

The previous prime is 28388449. The next prime is 28388473. The reversal of 28388462 is 26488382.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7097114 + ... + 7097117.

It is an arithmetic number, because the mean of its divisors is an integer number (10645674).

Almost surely, 2^28388462 is an apocalyptic number.

28388462 is a deficient number, since it is larger than the sum of its proper divisors (14194234).

28388462 is a wasteful number, since it uses less digits than its factorization.

28388462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14194233.

The product of its digits is 147456, while the sum is 41.

The square root of 28388462 is about 5328.0823942578. The cubic root of 28388462 is about 305.0567376307.

The spelling of 28388462 in words is "twenty-eight million, three hundred eighty-eight thousand, four hundred sixty-two".