28650812 has 6 divisors (see below), whose sum is σ = 50138928. Its totient is φ = 14325404.

The previous prime is 28650799. The next prime is 28650829. The reversal of 28650812 is 21805682.

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, 3581348 + ... + 3581355.

It is an arithmetic number, because the mean of its divisors is an integer number (8356488).

Almost surely, 2^28650812 is an apocalyptic number.

It is an amenable number.

28650812 is a deficient number, since it is larger than the sum of its proper divisors (21488116).

28650812 is a wasteful number, since it uses less digits than its factorization.

28650812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7162707 (or 7162705 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 28650812 is about 5352.6453273125. The cubic root of 28650812 is about 305.9935778338.

The spelling of 28650812 in words is "twenty-eight million, six hundred fifty thousand, eight hundred twelve".