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28233058 = 274194813
BaseRepresentation
bin110101110110…
…0110101100010
31222010101110211
41223230311202
524211424213
62445044334
7461656060
oct153546542
958111424
1028233058
1114a33a07
1295566aa
135b06969
143a6d030
15272a53d
hex1aecd62

28233058 has 16 divisors (see below), whose sum is σ = 48525120. Its totient is φ = 12068496.

The previous prime is 28233043. The next prime is 28233059. The reversal of 28233058 is 85033282.

It is a super-3 number, since 3×282330583 (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28233059) 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, 3460 + ... + 8272.

It is an arithmetic number, because the mean of its divisors is an integer number (3032820).

Almost surely, 228233058 is an apocalyptic number.

28233058 is a deficient number, since it is larger than the sum of its proper divisors (20292062).

28233058 is a wasteful number, since it uses less digits than its factorization.

28233058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5241.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 28233058 is about 5313.4788980479. The cubic root of 28233058 is about 304.4990720266.

The spelling of 28233058 in words is "twenty-eight million, two hundred thirty-three thousand, fifty-eight".

Divisors: 1 2 7 14 419 838 2933 4813 5866 9626 33691 67382 2016647 4033294 14116529 28233058