28888951 has 16 divisors (see below), whose sum is σ = 35682304. Its totient is φ = 22775904.

The previous prime is 28888939. The next prime is 28888963. The reversal of 28888951 is 15988882.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28888939) and next prime (28888963).

It is a cyclic number.

It is not a de Polignac number, because 28888951 - 2¹³ = 28880759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28888895 and 28888904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28888051) 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 15 ways as a sum of consecutive naturals, for example, 47290 + ... + 47896.

It is an arithmetic number, because the mean of its divisors is an integer number (2230144).

Almost surely, 2^28888951 is an apocalyptic number.

28888951 is a deficient number, since it is larger than the sum of its proper divisors (6793353).

28888951 is a wasteful number, since it uses less digits than its factorization.

28888951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150.

The product of its digits is 368640, while the sum is 49.

The square root of 28888951 is about 5374.8442768140. The cubic root of 28888951 is about 306.8390226515.

The spelling of 28888951 in words is "twenty-eight million, eight hundred eighty-eight thousand, nine hundred fifty-one".