28328476 has 36 divisors (see below), whose sum is σ = 56324520. Its totient is φ = 12349120.

The previous prime is 28328473. The next prime is 28328501. The reversal of 28328476 is 67482382.

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 11 ways as a sum of consecutive naturals, for example, 190050 + ... + 190198.

It is an arithmetic number, because the mean of its divisors is an integer number (1564570).

It is a vampire number, since it can be written as 3278 ⋅ 8642 (with its own digits).

Almost surely, 2^28328476 is an apocalyptic number.

It is an amenable number.

28328476 is a deficient number, since it is larger than the sum of its proper divisors (27996044).

28328476 is a wasteful number, since it uses less digits than its factorization.

28328476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 191 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 28328476 is about 5322.4501876485. The cubic root of 28328476 is about 304.8417202578.

The spelling of 28328476 in words is "twenty-eight million, three hundred twenty-eight thousand, four hundred seventy-six".