28899963 has 8 divisors (see below), whose sum is σ = 42814800. Its totient is φ = 19266624.

The previous prime is 28899947. The next prime is 28899973. The reversal of 28899963 is 36999882.

It is not a de Polignac number, because 28899963 - 2⁴ = 28899947 is a prime.

It is a super-2 number, since 2×28899963² = 1670415722802738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28899943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535158 + ... + 535211.

It is an arithmetic number, because the mean of its divisors is an integer number (5351850).

Almost surely, 2^28899963 is an apocalyptic number.

28899963 is a deficient number, since it is larger than the sum of its proper divisors (13914837).

28899963 is a wasteful number, since it uses less digits than its factorization.

28899963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070378 (or 1070372 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 28899963 is about 5375.8685809830. The cubic root of 28899963 is about 306.8780050532.

The spelling of 28899963 in words is "twenty-eight million, eight hundred ninety-nine thousand, nine hundred sixty-three".