28369351 has 4 divisors (see below), whose sum is σ = 28391472. Its totient is φ = 28347232.

The previous prime is 28369349. The next prime is 28369361. The reversal of 28369351 is 15396382.

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 28369351 - 2¹ = 28369349 is a prime.

It is a super-2 number, since 2×28369351² = 1609640152322402, which contains 22 as substring.

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 28369351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28369301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9010 + ... + 11743.

It is an arithmetic number, because the mean of its divisors is an integer number (7097868).

Almost surely, 2^28369351 is an apocalyptic number.

28369351 is a deficient number, since it is larger than the sum of its proper divisors (22121).

28369351 is a wasteful number, since it uses less digits than its factorization.

28369351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22120.

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

The square root of 28369351 is about 5326.2886703595. The cubic root of 28369351 is about 304.9882679354.

The spelling of 28369351 in words is "twenty-eight million, three hundred sixty-nine thousand, three hundred fifty-one".