28119951 has 12 divisors (see below), whose sum is σ = 40765920. Its totient is φ = 18678240.

The previous prime is 28119947. The next prime is 28119953. The reversal of 28119951 is 15991182.

It is not a de Polignac number, because 28119951 - 2² = 28119947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28119953) 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, 3031 + ... + 8088.

It is an arithmetic number, because the mean of its divisors is an integer number (3397160).

Almost surely, 2^28119951 is an apocalyptic number.

28119951 is a deficient number, since it is larger than the sum of its proper divisors (12645969).

28119951 is a wasteful number, since it uses less digits than its factorization.

28119951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11406 (or 11403 counting only the distinct ones).

The product of its digits is 6480, while the sum is 36.

The square root of 28119951 is about 5302.8248132481. The cubic root of 28119951 is about 304.0919007412.

The spelling of 28119951 in words is "twenty-eight million, one hundred nineteen thousand, nine hundred fifty-one".