28996028 has 6 divisors (see below), whose sum is σ = 50743056. Its totient is φ = 14498012.

The previous prime is 28996001. The next prime is 28996103. The reversal of 28996028 is 82069982.

It is a self number, because there is not a number n which added to its sum of digits gives 28996028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3624500 + ... + 3624507.

It is an arithmetic number, because the mean of its divisors is an integer number (8457176).

Almost surely, 2^28996028 is an apocalyptic number.

It is an amenable number.

28996028 is a deficient number, since it is larger than the sum of its proper divisors (21747028).

28996028 is a wasteful number, since it uses less digits than its factorization.

28996028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7249011 (or 7249009 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 28996028 is about 5384.7960035641. The cubic root of 28996028 is about 307.2176552127.

The spelling of 28996028 in words is "twenty-eight million, nine hundred ninety-six thousand, twenty-eight".