28875951 has 12 divisors (see below), whose sum is σ = 44918328. Its totient is φ = 17769744.

The previous prime is 28875941. The next prime is 28876007. The reversal of 28875951 is 15957882.

It is a happy number.

It is not a de Polignac number, because 28875951 - 2⁶ = 28875887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28875897 and 28875906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28875941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123285 + ... + 123518.

It is an arithmetic number, because the mean of its divisors is an integer number (3743194).

Almost surely, 2^28875951 is an apocalyptic number.

28875951 is a deficient number, since it is larger than the sum of its proper divisors (16042377).

28875951 is a wasteful number, since it uses less digits than its factorization.

28875951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246822 (or 246819 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 28875951 is about 5373.6348033710. The cubic root of 28875951 is about 306.7929899915.

The spelling of 28875951 in words is "twenty-eight million, eight hundred seventy-five thousand, nine hundred fifty-one".