28284351 has 8 divisors (see below), whose sum is σ = 38424240. Its totient is φ = 18500352.

The previous prime is 28284349. The next prime is 28284359. The reversal of 28284351 is 15348282.

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

It is not a de Polignac number, because 28284351 - 2¹ = 28284349 is a prime.

It is a super-2 number, since 2×28284351² = 1600009022982402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28284359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88786 + ... + 89103.

It is an arithmetic number, because the mean of its divisors is an integer number (4803030).

Almost surely, 2^28284351 is an apocalyptic number.

28284351 is a deficient number, since it is larger than the sum of its proper divisors (10139889).

28284351 is a wasteful number, since it uses less digits than its factorization.

28284351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177945.

The product of its digits is 15360, while the sum is 33.

The square root of 28284351 is about 5318.3033948807. The cubic root of 28284351 is about 304.6833621581.

The spelling of 28284351 in words is "twenty-eight million, two hundred eighty-four thousand, three hundred fifty-one".