28696951 has 4 divisors (see below), whose sum is σ = 29183400. Its totient is φ = 28210504.

The previous prime is 28696949. The next prime is 28696961. The reversal of 28696951 is 15969682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28696951 - 2¹ = 28696949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28696961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243136 + ... + 243253.

It is an arithmetic number, because the mean of its divisors is an integer number (7295850).

Almost surely, 2^28696951 is an apocalyptic number.

28696951 is a deficient number, since it is larger than the sum of its proper divisors (486449).

28696951 is an equidigital number, since it uses as much as digits as its factorization.

28696951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486448.

The product of its digits is 233280, while the sum is 46.

The square root of 28696951 is about 5356.9535185588. The cubic root of 28696951 is about 306.1577461400.

The spelling of 28696951 in words is "twenty-eight million, six hundred ninety-six thousand, nine hundred fifty-one".