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28314733 = 131331653
BaseRepresentation
bin110110000000…
…0110001101101
31222021112111211
41230000301231
524222032413
62450514421
7462446146
oct154006155
958245454
1028314733
1114a8a307
129595a11
135b34ba5
143a90acd
15274483d
hex1b00c6d

28314733 has 8 divisors (see below), whose sum is σ = 28660896. Its totient is φ = 27970800.

The previous prime is 28314721. The next prime is 28314739. The reversal of 28314733 is 33741382.

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

It is a cyclic number.

It is not a de Polignac number, because 28314733 - 213 = 28306541 is a prime.

It is a super-2 number, since 2×283147332 = 1603448209722578, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28314695 and 28314704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28314739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43035 + ... + 43687.

It is an arithmetic number, because the mean of its divisors is an integer number (3582612).

Almost surely, 228314733 is an apocalyptic number.

It is an amenable number.

28314733 is a deficient number, since it is larger than the sum of its proper divisors (346163).

28314733 is a wasteful number, since it uses less digits than its factorization.

28314733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115.

The product of its digits is 12096, while the sum is 31.

The square root of 28314733 is about 5321.1589902953. The cubic root of 28314733 is about 304.7924163063.

The spelling of 28314733 in words is "twenty-eight million, three hundred fourteen thousand, seven hundred thirty-three".

Divisors: 1 131 331 653 43361 85543 216143 28314733