28328996 has 6 divisors (see below), whose sum is σ = 49575750. Its totient is φ = 14164496.

The previous prime is 28328941. The next prime is 28329011. The reversal of 28328996 is 69982382.

It can be written as a sum of positive squares in only one way, i.e., 17106496 + 11222500 = 4136^2 + 3350^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28328996.

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, 3541121 + ... + 3541128.

It is an arithmetic number, because the mean of its divisors is an integer number (8262625).

Almost surely, 2^28328996 is an apocalyptic number.

It is an amenable number.

28328996 is a deficient number, since it is larger than the sum of its proper divisors (21246754).

28328996 is a wasteful number, since it uses less digits than its factorization.

28328996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7082253 (or 7082251 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 28328996 is about 5322.4990371065. The cubic root of 28328996 is about 304.8435854802.

The spelling of 28328996 in words is "twenty-eight million, three hundred twenty-eight thousand, nine hundred ninety-six".