28328470 has 8 divisors (see below), whose sum is σ = 50991264. Its totient is φ = 11331384.

The previous prime is 28328467. The next prime is 28328473. The reversal of 28328470 is 7482382.

It is an interprime number because it is at equal distance from previous prime (28328467) and next prime (28328473).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28328473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1416414 + ... + 1416433.

It is an arithmetic number, because the mean of its divisors is an integer number (6373908).

Almost surely, 2^28328470 is an apocalyptic number.

28328470 is a deficient number, since it is larger than the sum of its proper divisors (22662794).

28328470 is a wasteful number, since it uses less digits than its factorization.

28328470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832854.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 28328470 is about 5322.4496239983. The cubic root of 28328470 is about 304.8416987359.

The spelling of 28328470 in words is "twenty-eight million, three hundred twenty-eight thousand, four hundred seventy".