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28967349 = 373349379
BaseRepresentation
bin110111010000…
…0000110110101
32000111200201210
41232200012311
524403423344
62512512033
7501134625
oct156400665
960450653
1028967349
1115395664
12984b619
136002c58
143bc0885
152822db9
hex1ba01b5

28967349 has 16 divisors (see below), whose sum is σ = 39368000. Its totient is φ = 18942336.

The previous prime is 28967333. The next prime is 28967353. The reversal of 28967349 is 94376982.

It is not a de Polignac number, because 28967349 - 24 = 28967333 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28967298 and 28967307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28967399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76242 + ... + 76620.

It is an arithmetic number, because the mean of its divisors is an integer number (2460500).

Almost surely, 228967349 is an apocalyptic number.

It is an amenable number.

28967349 is a deficient number, since it is larger than the sum of its proper divisors (10400651).

28967349 is a wasteful number, since it uses less digits than its factorization.

28967349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804.

The product of its digits is 653184, while the sum is 48.

The square root of 28967349 is about 5382.1323841020. The cubic root of 28967349 is about 307.1163355708.

The spelling of 28967349 in words is "twenty-eight million, nine hundred sixty-seven thousand, three hundred forty-nine".

Divisors: 1 3 73 219 349 379 1047 1137 25477 27667 76431 83001 132271 396813 9655783 28967349