28851951 has 8 divisors (see below), whose sum is σ = 38810160. Its totient is φ = 19064192.

The previous prime is 28851947. The next prime is 28851967. The reversal of 28851951 is 15915882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28851951 - 2² = 28851947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28851751) 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, 42216 + ... + 42893.

It is an arithmetic number, because the mean of its divisors is an integer number (4851270).

Almost surely, 2^28851951 is an apocalyptic number.

28851951 is a deficient number, since it is larger than the sum of its proper divisors (9958209).

28851951 is a wasteful number, since it uses less digits than its factorization.

28851951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85225.

The product of its digits is 28800, while the sum is 39.

The square root of 28851951 is about 5371.4012138361. The cubic root of 28851951 is about 306.7079703084.

The spelling of 28851951 in words is "twenty-eight million, eight hundred fifty-one thousand, nine hundred fifty-one".