28945412 has 6 divisors (see below), whose sum is σ = 50654478. Its totient is φ = 14472704.

The previous prime is 28945403. The next prime is 28945421. The reversal of 28945412 is 21454982.

It is an interprime number because it is at equal distance from previous prime (28945403) and next prime (28945421).

It can be written as a sum of positive squares in only one way, i.e., 28879876 + 65536 = 5374^2 + 256^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3618173 + ... + 3618180.

It is an arithmetic number, because the mean of its divisors is an integer number (8442413).

Almost surely, 2^28945412 is an apocalyptic number.

It is an amenable number.

28945412 is a deficient number, since it is larger than the sum of its proper divisors (21709066).

28945412 is a wasteful number, since it uses less digits than its factorization.

28945412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7236357 (or 7236355 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 28945412 is about 5380.0940512225. The cubic root of 28945412 is about 307.0387894980.

The spelling of 28945412 in words is "twenty-eight million, nine hundred forty-five thousand, four hundred twelve".