28936351 has 4 divisors (see below), whose sum is σ = 29024104. Its totient is φ = 28848600.

The previous prime is 28936337. The next prime is 28936379. The reversal of 28936351 is 15363982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15363982 = 2 ⋅7681991.

It is a cyclic number.

It is not a de Polignac number, because 28936351 - 2⁷ = 28936223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28936351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28936301) 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, 43380 + ... + 44041.

It is an arithmetic number, because the mean of its divisors is an integer number (7256026).

Almost surely, 2^28936351 is an apocalyptic number.

28936351 is a deficient number, since it is larger than the sum of its proper divisors (87753).

28936351 is an equidigital number, since it uses as much as digits as its factorization.

28936351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87752.

The product of its digits is 38880, while the sum is 37.

The square root of 28936351 is about 5379.2518996604. The cubic root of 28936351 is about 307.0067479339.

The spelling of 28936351 in words is "twenty-eight million, nine hundred thirty-six thousand, three hundred fifty-one".